Merge branch 'jx/proc-receive-hook'

"git receive-pack" that accepts requests by "git push" learned to
outsource most of the ref updates to the new "proc-receive" hook.

* jx/proc-receive-hook:
  doc: add documentation for the proc-receive hook
  transport: parse report options for tracking refs
  t5411: test updates of remote-tracking branches
  receive-pack: new config receive.procReceiveRefs
  doc: add document for capability report-status-v2
  New capability "report-status-v2" for git-push
  receive-pack: feed report options to post-receive
  receive-pack: add new proc-receive hook
  t5411: add basic test cases for proc-receive hook
  transport: not report a non-head push as a branch

Documentation/config/receive.txt

@@ -114,6 +114,28 @@ receive.hideRefs::
 	An attempt to update or delete a hidden ref by `git push` is
 	rejected.
 
+receive.procReceiveRefs::
+	This is a multi-valued variable that defines reference prefixes
+	to match the commands in `receive-pack`.  Commands matching the
+	prefixes will be executed by an external hook "proc-receive",
+	instead of the internal `execute_commands` function.  If this
+	variable is not defined, the "proc-receive" hook will never be
+	used, and all commands will be executed by the internal
+	`execute_commands` function.
++
+For example, if this variable is set to "refs/for", pushing to reference
+such as "refs/for/master" will not create or update a reference named
+"refs/for/master", but may create or update a pull request directly by
+running the hook "proc-receive".
++
+Optional modifiers can be provided in the beginning of the value to filter
+commands for specific actions: create (a), modify (m), delete (d).
+A `!` can be included in the modifiers to negate the reference prefix entry.
+E.g.:
++
+	git config --system --add receive.procReceiveRefs ad:refs/heads
+	git config --system --add receive.procReceiveRefs !:refs/heads
+
 receive.updateServerInfo::
 	If set to true, git-receive-pack will run git-update-server-info
 	after receiving data from git-push and updating refs.

Documentation/githooks.txt

@@ -335,6 +335,68 @@ The default 'update' hook, when enabled--and with
 `hooks.allowunannotated` config option unset or set to false--prevents
 unannotated tags to be pushed.
 
+[[proc-receive]]
+proc-receive
+~~~~~~~~~~~~
+
+This hook is invoked by linkgit:git-receive-pack[1].  If the server has
+set the multi-valued config variable `receive.procReceiveRefs`, and the
+commands sent to 'receive-pack' have matching reference names, these
+commands will be executed by this hook, instead of by the internal
+`execute_commands()` function.  This hook is responsible for updating
+the relevant references and reporting the results back to 'receive-pack'.
+
+This hook executes once for the receive operation.  It takes no
+arguments, but uses a pkt-line format protocol to communicate with
+'receive-pack' to read commands, push-options and send results.  In the
+following example for the protocol, the letter 'S' stands for
+'receive-pack' and the letter 'H' stands for this hook.
+
+    # Version and features negotiation.
+    S: PKT-LINE(version=1\0push-options atomic...)
+    S: flush-pkt
+    H: PKT-LINE(version=1\0push-options...)
+    H: flush-pkt
+
+    # Send commands from server to the hook.
+    S: PKT-LINE(<old-oid> <new-oid> <ref>)
+    S: ... ...
+    S: flush-pkt
+    # Send push-options only if the 'push-options' feature is enabled.
+    S: PKT-LINE(push-option)
+    S: ... ...
+    S: flush-pkt
+
+    # Receive result from the hook.
+    # OK, run this command successfully.
+    H: PKT-LINE(ok <ref>)
+    # NO, I reject it.
+    H: PKT-LINE(ng <ref> <reason>)
+    # Fall through, let 'receive-pack' to execute it.
+    H: PKT-LINE(ok <ref>)
+    H: PKT-LINE(option fall-through)
+    # OK, but has an alternate reference.  The alternate reference name
+    # and other status can be given in option directives.
+    H: PKT-LINE(ok <ref>)
+    H: PKT-LINE(option refname <refname>)
+    H: PKT-LINE(option old-oid <old-oid>)
+    H: PKT-LINE(option new-oid <new-oid>)
+    H: PKT-LINE(option forced-update)
+    H: ... ...
+    H: flush-pkt
+
+Each command for the 'proc-receive' hook may point to a pseudo-reference
+and always has a zero-old as its old-oid, while the 'proc-receive' hook
+may update an alternate reference and the alternate reference may exist
+already with a non-zero old-oid.  For this case, this hook will use
+"option" directives to report extended attributes for the reference given
+by the leading "ok" directive.
+
+The report of the commands of this hook should have the same order as
+the input.  The exit status of the 'proc-receive' hook only determines
+the success or failure of the group of commands sent to it, unless
+atomic push is in use.
+
 [[post-receive]]
 post-receive
 ~~~~~~~~~~~~

Documentation/technical/pack-protocol.txt

@@ -503,8 +503,8 @@ The reference discovery phase is done nearly the same way as it is in the
 fetching protocol. Each reference obj-id and name on the server is sent
 in packet-line format to the client, followed by a flush-pkt.  The only
 real difference is that the capability listing is different - the only
-possible values are 'report-status', 'delete-refs', 'ofs-delta' and
+possible values are 'report-status', 'report-status-v2', 'delete-refs',
-'push-options'.
+'ofs-delta', 'atomic' and 'push-options'.
 
 Reference Update Request and Packfile Transfer
 ----------------------------------------------
@@ -625,7 +625,7 @@ Report Status
 -------------
 
 After receiving the pack data from the sender, the receiver sends a
-report if 'report-status' capability is in effect.
+report if 'report-status' or 'report-status-v2' capability is in effect.
 It is a short listing of what happened in that update.  It will first
 list the status of the packfile unpacking as either 'unpack ok' or
 'unpack [error]'.  Then it will list the status for each of the references
@@ -647,6 +647,41 @@ update was successful, or 'ng [refname] [error]' if the update was not.
   error-msg         = 1*(OCTET) ; where not "ok"
 ----
 
+The 'report-status-v2' capability extends the protocol by adding new option
+lines in order to support reporting of reference rewritten by the
+'proc-receive' hook.  The 'proc-receive' hook may handle a command for a
+pseudo-reference which may create or update one or more references, and each
+reference may have different name, different new-oid, and different old-oid.
+
+----
+  report-status-v2  = unpack-status
+		      1*(command-status-v2)
+		      flush-pkt
+
+  unpack-status     = PKT-LINE("unpack" SP unpack-result)
+  unpack-result     = "ok" / error-msg
+
+  command-status-v2 = command-ok-v2 / command-fail
+  command-ok-v2     = command-ok
+		      *option-line
+
+  command-ok        = PKT-LINE("ok" SP refname)
+  command-fail      = PKT-LINE("ng" SP refname SP error-msg)
+
+  error-msg         = 1*(OCTET) ; where not "ok"
+
+  option-line       = *1(option-refname)
+		      *1(option-old-oid)
+		      *1(option-new-oid)
+		      *1(option-forced-update)
+
+  option-refname    = PKT-LINE("option" SP "refname" SP refname)
+  option-old-oid    = PKT-LINE("option" SP "old-oid" SP obj-id)
+  option-new-oid    = PKT-LINE("option" SP "new-oid" SP obj-id)
+  option-force      = PKT-LINE("option" SP "forced-update")
+
+----
+
 Updates can be unsuccessful for a number of reasons.  The reference can have
 changed since the reference discovery phase was originally sent, meaning
 someone pushed in the meantime.  The reference being pushed could be a

Documentation/technical/protocol-capabilities.txt

@@ -22,9 +22,9 @@ was sent.  Server MUST NOT ignore capabilities that client requested
 and server advertised.  As a consequence of these rules, server MUST
 NOT advertise capabilities it does not understand.
 
-The 'atomic', 'report-status', 'delete-refs', 'quiet', and 'push-cert'
+The 'atomic', 'report-status', 'report-status-v2', 'delete-refs', 'quiet',
-capabilities are sent and recognized by the receive-pack (push to server)
+and 'push-cert' capabilities are sent and recognized by the receive-pack
-process.
+(push to server) process.
 
 The 'ofs-delta' and 'side-band-64k' capabilities are sent and recognized
 by both upload-pack and receive-pack protocols.  The 'agent' capability
@@ -284,6 +284,17 @@ each reference was updated successfully.  If any of those were not
 successful, it will send back an error message.  See pack-protocol.txt
 for example messages.
 
+report-status-v2
+----------------
+
+Capability 'report-status-v2' extends capability 'report-status' by
+adding new "option" directives in order to support reference rewritten by
+the "proc-receive" hook.  The "proc-receive" hook may handle a command
+for a pseudo-reference which may create or update a reference with
+different name, new-oid, and old-oid.  While the capability
+'report-status' cannot report for such case.  See pack-protocol.txt
+for details.
+
 delete-refs
 -----------
 

Makefile

@@ -720,6 +720,7 @@ TEST_BUILTINS_OBJS += test-parse-pathspec-file.o
 TEST_BUILTINS_OBJS += test-path-utils.o
 TEST_BUILTINS_OBJS += test-pkt-line.o
 TEST_BUILTINS_OBJS += test-prio-queue.o
+TEST_BUILTINS_OBJS += test-proc-receive.o
 TEST_BUILTINS_OBJS += test-progress.o
 TEST_BUILTINS_OBJS += test-reach.o
 TEST_BUILTINS_OBJS += test-read-cache.o

builtin/receive-pack.c

@@ -57,6 +57,7 @@ static int advertise_push_options;
 static int unpack_limit = 100;
 static off_t max_input_size;
 static int report_status;
+static int report_status_v2;
 static int use_sideband;
 static int use_atomic;
 static int use_push_options;
@@ -97,6 +98,17 @@ static int keepalive_in_sec = 5;
 
 static struct tmp_objdir *tmp_objdir;
 
+static struct proc_receive_ref {
+	unsigned int want_add:1,
+		     want_delete:1,
+		     want_modify:1,
+		     negative_ref:1;
+	char *ref_prefix;
+	struct proc_receive_ref *next;
+} *proc_receive_ref;
+
+static void proc_receive_ref_append(const char *prefix);
+
 static enum deny_action parse_deny_action(const char *var, const char *value)
 {
 	if (value) {
@@ -229,6 +241,13 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
 		return 0;
 	}
 
+	if (strcmp(var, "receive.procreceiverefs") == 0) {
+		if (!value)
+			return config_error_nonbool(var);
+		proc_receive_ref_append(value);
+		return 0;
+	}
+
 	return git_default_config(var, value, cb);
 }
 
@@ -240,7 +259,7 @@ static void show_ref(const char *path, const struct object_id *oid)
 		struct strbuf cap = STRBUF_INIT;
 
 		strbuf_addstr(&cap,
-			      "report-status delete-refs side-band-64k quiet");
+			      "report-status report-status-v2 delete-refs side-band-64k quiet");
 		if (advertise_atomic_push)
 			strbuf_addstr(&cap, " atomic");
 		if (prefer_ofs_delta)
@@ -310,17 +329,94 @@ static void write_head_info(void)
 	packet_flush(1);
 }
 
+#define RUN_PROC_RECEIVE_SCHEDULED	1
+#define RUN_PROC_RECEIVE_RETURNED	2
 struct command {
 	struct command *next;
 	const char *error_string;
+	struct ref_push_report *report;
 	unsigned int skip_update:1,
-		     did_not_exist:1;
+		     did_not_exist:1,
+		     run_proc_receive:2;
 	int index;
 	struct object_id old_oid;
 	struct object_id new_oid;
 	char ref_name[FLEX_ARRAY]; /* more */
 };
 
+static void proc_receive_ref_append(const char *prefix)
+{
+	struct proc_receive_ref *ref_pattern;
+	char *p;
+	int len;
+
+	ref_pattern = xcalloc(1, sizeof(struct proc_receive_ref));
+	p = strchr(prefix, ':');
+	if (p) {
+		while (prefix < p) {
+			if (*prefix == 'a')
+				ref_pattern->want_add = 1;
+			else if (*prefix == 'd')
+				ref_pattern->want_delete = 1;
+			else if (*prefix == 'm')
+				ref_pattern->want_modify = 1;
+			else if (*prefix == '!')
+				ref_pattern->negative_ref = 1;
+			prefix++;
+		}
+		prefix++;
+	} else {
+		ref_pattern->want_add = 1;
+		ref_pattern->want_delete = 1;
+		ref_pattern->want_modify = 1;
+	}
+	len = strlen(prefix);
+	while (len && prefix[len - 1] == '/')
+		len--;
+	ref_pattern->ref_prefix = xmemdupz(prefix, len);
+	if (!proc_receive_ref) {
+		proc_receive_ref = ref_pattern;
+	} else {
+		struct proc_receive_ref *end;
+
+		end = proc_receive_ref;
+		while (end->next)
+			end = end->next;
+		end->next = ref_pattern;
+	}
+}
+
+static int proc_receive_ref_matches(struct command *cmd)
+{
+	struct proc_receive_ref *p;
+
+	if (!proc_receive_ref)
+		return 0;
+
+	for (p = proc_receive_ref; p; p = p->next) {
+		const char *match = p->ref_prefix;
+		const char *remains;
+
+		if (!p->want_add && is_null_oid(&cmd->old_oid))
+			continue;
+		else if (!p->want_delete && is_null_oid(&cmd->new_oid))
+			continue;
+		else if (!p->want_modify &&
+			 !is_null_oid(&cmd->old_oid) &&
+			 !is_null_oid(&cmd->new_oid))
+			continue;
+
+		if (skip_prefix(cmd->ref_name, match, &remains) &&
+		    (!*remains || *remains == '/')) {
+			if (!p->negative_ref)
+				return 1;
+		} else if (p->negative_ref) {
+			return 1;
+		}
+	}
+	return 0;
+}
+
 static void rp_error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 static void rp_warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 
@@ -692,6 +788,7 @@ static void prepare_push_cert_sha1(struct child_process *proc)
 
 struct receive_hook_feed_state {
 	struct command *cmd;
+	struct ref_push_report *report;
 	int skip_broken;
 	struct strbuf buf;
 	const struct string_list *push_options;
@@ -779,11 +876,31 @@ static int feed_receive_hook(void *state_, const char **bufp, size_t *sizep)
 		cmd = cmd->next;
 	if (!cmd)
 		return -1; /* EOF */
+	if (!bufp)
+		return 0; /* OK, can feed something. */
 	strbuf_reset(&state->buf);
-	strbuf_addf(&state->buf, "%s %s %s\n",
+	if (!state->report)
-		    oid_to_hex(&cmd->old_oid), oid_to_hex(&cmd->new_oid),
+		state->report = cmd->report;
-		    cmd->ref_name);
+	if (state->report) {
-	state->cmd = cmd->next;
+		struct object_id *old_oid;
+		struct object_id *new_oid;
+		const char *ref_name;
+
+		old_oid = state->report->old_oid ? state->report->old_oid : &cmd->old_oid;
+		new_oid = state->report->new_oid ? state->report->new_oid : &cmd->new_oid;
+		ref_name = state->report->ref_name ? state->report->ref_name : cmd->ref_name;
+		strbuf_addf(&state->buf, "%s %s %s\n",
+			    oid_to_hex(old_oid), oid_to_hex(new_oid),
+			    ref_name);
+		state->report = state->report->next;
+		if (!state->report)
+			state->cmd = cmd->next;
+	} else {
+		strbuf_addf(&state->buf, "%s %s %s\n",
+			    oid_to_hex(&cmd->old_oid), oid_to_hex(&cmd->new_oid),
+			    cmd->ref_name);
+		state->cmd = cmd->next;
+	}
 	if (bufp) {
 		*bufp = state->buf.buf;
 		*sizep = state->buf.len;
@@ -802,6 +919,7 @@ static int run_receive_hook(struct command *commands,
 	strbuf_init(&state.buf, 0);
 	state.cmd = commands;
 	state.skip_broken = skip_broken;
+	state.report = NULL;
 	if (feed_receive_hook(&state, NULL, NULL))
 		return 0;
 	state.cmd = commands;
@@ -840,6 +958,268 @@ static int run_update_hook(struct command *cmd)
 	return finish_command(&proc);
 }
 
+static struct command *find_command_by_refname(struct command *list,
+					       const char *refname)
+{
+	for (; list; list = list->next)
+		if (!strcmp(list->ref_name, refname))
+			return list;
+	return NULL;
+}
+
+static int read_proc_receive_report(struct packet_reader *reader,
+				    struct command *commands,
+				    struct strbuf *errmsg)
+{
+	struct command *cmd;
+	struct command *hint = NULL;
+	struct ref_push_report *report = NULL;
+	int new_report = 0;
+	int code = 0;
+	int once = 0;
+
+	for (;;) {
+		struct object_id old_oid, new_oid;
+		const char *head;
+		const char *refname;
+		char *p;
+
+		if (packet_reader_read(reader) != PACKET_READ_NORMAL)
+			break;
+
+		head = reader->line;
+		p = strchr(head, ' ');
+		if (!p) {
+			strbuf_addf(errmsg, "proc-receive reported incomplete status line: '%s'\n", head);
+			code = -1;
+			continue;
+		}
+		*p++ = '\0';
+		if (!strcmp(head, "option")) {
+			const char *key, *val;
+
+			if (!hint || !(report || new_report)) {
+				if (!once++)
+					strbuf_addstr(errmsg, "proc-receive reported 'option' without a matching 'ok/ng' directive\n");
+				code = -1;
+				continue;
+			}
+			if (new_report) {
+				if (!hint->report) {
+					hint->report = xcalloc(1, sizeof(struct ref_push_report));
+					report = hint->report;
+				} else {
+					report = hint->report;
+					while (report->next)
+						report = report->next;
+					report->next = xcalloc(1, sizeof(struct ref_push_report));
+					report = report->next;
+				}
+				new_report = 0;
+			}
+			key = p;
+			p = strchr(key, ' ');
+			if (p)
+				*p++ = '\0';
+			val = p;
+			if (!strcmp(key, "refname"))
+				report->ref_name = xstrdup_or_null(val);
+			else if (!strcmp(key, "old-oid") && val &&
+				 !parse_oid_hex(val, &old_oid, &val))
+				report->old_oid = oiddup(&old_oid);
+			else if (!strcmp(key, "new-oid") && val &&
+				 !parse_oid_hex(val, &new_oid, &val))
+				report->new_oid = oiddup(&new_oid);
+			else if (!strcmp(key, "forced-update"))
+				report->forced_update = 1;
+			else if (!strcmp(key, "fall-through"))
+				/* Fall through, let 'receive-pack' to execute it. */
+				hint->run_proc_receive = 0;
+			continue;
+		}
+
+		report = NULL;
+		new_report = 0;
+		refname = p;
+		p = strchr(refname, ' ');
+		if (p)
+			*p++ = '\0';
+		if (strcmp(head, "ok") && strcmp(head, "ng")) {
+			strbuf_addf(errmsg, "proc-receive reported bad status '%s' on ref '%s'\n",
+				    head, refname);
+			code = -1;
+			continue;
+		}
+
+		/* first try searching at our hint, falling back to all refs */
+		if (hint)
+			hint = find_command_by_refname(hint, refname);
+		if (!hint)
+			hint = find_command_by_refname(commands, refname);
+		if (!hint) {
+			strbuf_addf(errmsg, "proc-receive reported status on unknown ref: %s\n",
+				    refname);
+			code = -1;
+			continue;
+		}
+		if (!hint->run_proc_receive) {
+			strbuf_addf(errmsg, "proc-receive reported status on unexpected ref: %s\n",
+				    refname);
+			code = -1;
+			continue;
+		}
+		hint->run_proc_receive |= RUN_PROC_RECEIVE_RETURNED;
+		if (!strcmp(head, "ng")) {
+			if (p)
+				hint->error_string = xstrdup(p);
+			else
+				hint->error_string = "failed";
+			code = -1;
+			continue;
+		}
+		new_report = 1;
+	}
+
+	for (cmd = commands; cmd; cmd = cmd->next)
+		if (cmd->run_proc_receive && !cmd->error_string &&
+		    !(cmd->run_proc_receive & RUN_PROC_RECEIVE_RETURNED)) {
+		    cmd->error_string = "proc-receive failed to report status";
+		    code = -1;
+		}
+	return code;
+}
+
+static int run_proc_receive_hook(struct command *commands,
+				 const struct string_list *push_options)
+{
+	struct child_process proc = CHILD_PROCESS_INIT;
+	struct async muxer;
+	struct command *cmd;
+	const char *argv[2];
+	struct packet_reader reader;
+	struct strbuf cap = STRBUF_INIT;
+	struct strbuf errmsg = STRBUF_INIT;
+	int hook_use_push_options = 0;
+	int version = 0;
+	int code;
+
+	argv[0] = find_hook("proc-receive");
+	if (!argv[0]) {
+		rp_error("cannot find hook 'proc-receive'");
+		return -1;
+	}
+	argv[1] = NULL;
+
+	proc.argv = argv;
+	proc.in = -1;
+	proc.out = -1;
+	proc.trace2_hook_name = "proc-receive";
+
+	if (use_sideband) {
+		memset(&muxer, 0, sizeof(muxer));
+		muxer.proc = copy_to_sideband;
+		muxer.in = -1;
+		code = start_async(&muxer);
+		if (code)
+			return code;
+		proc.err = muxer.in;
+	} else {
+		proc.err = 0;
+	}
+
+	code = start_command(&proc);
+	if (code) {
+		if (use_sideband)
+			finish_async(&muxer);
+		return code;
+	}
+
+	sigchain_push(SIGPIPE, SIG_IGN);
+
+	/* Version negotiaton */
+	packet_reader_init(&reader, proc.out, NULL, 0,
+			   PACKET_READ_CHOMP_NEWLINE |
+			   PACKET_READ_GENTLE_ON_EOF);
+	if (use_atomic)
+		strbuf_addstr(&cap, " atomic");
+	if (use_push_options)
+		strbuf_addstr(&cap, " push-options");
+	if (cap.len) {
+		packet_write_fmt(proc.in, "version=1%c%s\n", '\0', cap.buf + 1);
+		strbuf_release(&cap);
+	} else {
+		packet_write_fmt(proc.in, "version=1\n");
+	}
+	packet_flush(proc.in);
+
+	for (;;) {
+		int linelen;
+
+		if (packet_reader_read(&reader) != PACKET_READ_NORMAL)
+			break;
+
+		if (reader.pktlen > 8 && starts_with(reader.line, "version=")) {
+			version = atoi(reader.line + 8);
+			linelen = strlen(reader.line);
+			if (linelen < reader.pktlen) {
+				const char *feature_list = reader.line + linelen + 1;
+				if (parse_feature_request(feature_list, "push-options"))
+					hook_use_push_options = 1;
+			}
+		}
+	}
+
+	if (version != 1) {
+		strbuf_addf(&errmsg, "proc-receive version '%d' is not supported",
+			    version);
+		code = -1;
+		goto cleanup;
+	}
+
+	/* Send commands */
+	for (cmd = commands; cmd; cmd = cmd->next) {
+		if (!cmd->run_proc_receive || cmd->skip_update || cmd->error_string)
+			continue;
+		packet_write_fmt(proc.in, "%s %s %s",
+				 oid_to_hex(&cmd->old_oid),
+				 oid_to_hex(&cmd->new_oid),
+				 cmd->ref_name);
+	}
+	packet_flush(proc.in);
+
+	/* Send push options */
+	if (hook_use_push_options) {
+		struct string_list_item *item;
+
+		for_each_string_list_item(item, push_options)
+			packet_write_fmt(proc.in, "%s", item->string);
+		packet_flush(proc.in);
+	}
+
+	/* Read result from proc-receive */
+	code = read_proc_receive_report(&reader, commands, &errmsg);
+
+cleanup:
+	close(proc.in);
+	close(proc.out);
+	if (use_sideband)
+		finish_async(&muxer);
+	if (finish_command(&proc))
+		code = -1;
+	if (errmsg.len >0) {
+		char *p = errmsg.buf;
+
+		p += errmsg.len - 1;
+		if (*p == '\n')
+			*p = '\0';
+		rp_error("%s", errmsg.buf);
+		strbuf_release(&errmsg);
+	}
+	sigchain_pop(SIGPIPE);
+
+	return code;
+}
+
 static char *refuse_unconfigured_deny_msg =
 	N_("By default, updating the current branch in a non-bare repository\n"
 	   "is denied, because it will make the index and work tree inconsistent\n"
@@ -1415,7 +1795,7 @@ static void execute_commands_non_atomic(struct command *commands,
 	struct strbuf err = STRBUF_INIT;
 
 	for (cmd = commands; cmd; cmd = cmd->next) {
-		if (!should_process_cmd(cmd))
+		if (!should_process_cmd(cmd) || cmd->run_proc_receive)
 			continue;
 
 		transaction = ref_transaction_begin(&err);
@@ -1455,7 +1835,7 @@ static void execute_commands_atomic(struct command *commands,
 	}
 
 	for (cmd = commands; cmd; cmd = cmd->next) {
-		if (!should_process_cmd(cmd))
+		if (!should_process_cmd(cmd) || cmd->run_proc_receive)
 			continue;
 
 		cmd->error_string = update(cmd, si);
@@ -1491,6 +1871,7 @@ static void execute_commands(struct command *commands,
 	struct iterate_data data;
 	struct async muxer;
 	int err_fd = 0;
+	int run_proc_receive = 0;
 
 	if (unpacker_error) {
 		for (cmd = commands; cmd; cmd = cmd->next)
@@ -1520,6 +1901,22 @@ static void execute_commands(struct command *commands,
 
 	reject_updates_to_hidden(commands);
 
+	/*
+	 * Try to find commands that have special prefix in their reference names,
+	 * and mark them to run an external "proc-receive" hook later.
+	 */
+	if (proc_receive_ref) {
+		for (cmd = commands; cmd; cmd = cmd->next) {
+			if (!should_process_cmd(cmd))
+				continue;
+
+			if (proc_receive_ref_matches(cmd)) {
+				cmd->run_proc_receive = RUN_PROC_RECEIVE_SCHEDULED;
+				run_proc_receive = 1;
+			}
+		}
+	}
+
 	if (run_receive_hook(commands, "pre-receive", 0, push_options)) {
 		for (cmd = commands; cmd; cmd = cmd->next) {
 			if (!cmd->error_string)
@@ -1546,6 +1943,14 @@ static void execute_commands(struct command *commands,
 	free(head_name_to_free);
 	head_name = head_name_to_free = resolve_refdup("HEAD", 0, NULL, NULL);
 
+	if (run_proc_receive &&
+	    run_proc_receive_hook(commands, push_options))
+		for (cmd = commands; cmd; cmd = cmd->next)
+			if (!cmd->error_string &&
+			    !(cmd->run_proc_receive & RUN_PROC_RECEIVE_RETURNED) &&
+			    (cmd->run_proc_receive || use_atomic))
+				cmd->error_string = "fail to run proc-receive hook";
+
 	if (use_atomic)
 		execute_commands_atomic(commands, si);
 	else
@@ -1629,6 +2034,8 @@ static struct command *read_head_info(struct packet_reader *reader,
 			int len = 0;
 			if (parse_feature_request(feature_list, "report-status"))
 				report_status = 1;
+			if (parse_feature_request(feature_list, "report-status-v2"))
+				report_status_v2 = 1;
 			if (parse_feature_request(feature_list, "side-band-64k"))
 				use_sideband = LARGE_PACKET_MAX;
 			if (parse_feature_request(feature_list, "quiet"))
@@ -1947,6 +2354,51 @@ static void report(struct command *commands, const char *unpack_status)
 	strbuf_release(&buf);
 }
 
+static void report_v2(struct command *commands, const char *unpack_status)
+{
+	struct command *cmd;
+	struct strbuf buf = STRBUF_INIT;
+	struct ref_push_report *report;
+
+	packet_buf_write(&buf, "unpack %s\n",
+			 unpack_status ? unpack_status : "ok");
+	for (cmd = commands; cmd; cmd = cmd->next) {
+		int count = 0;
+
+		if (cmd->error_string) {
+			packet_buf_write(&buf, "ng %s %s\n",
+					 cmd->ref_name,
+					 cmd->error_string);
+			continue;
+		}
+		packet_buf_write(&buf, "ok %s\n",
+				 cmd->ref_name);
+		for (report = cmd->report; report; report = report->next) {
+			if (count++ > 0)
+				packet_buf_write(&buf, "ok %s\n",
+						 cmd->ref_name);
+			if (report->ref_name)
+				packet_buf_write(&buf, "option refname %s\n",
+						 report->ref_name);
+			if (report->old_oid)
+				packet_buf_write(&buf, "option old-oid %s\n",
+						 oid_to_hex(report->old_oid));
+			if (report->new_oid)
+				packet_buf_write(&buf, "option new-oid %s\n",
+						 oid_to_hex(report->new_oid));
+			if (report->forced_update)
+				packet_buf_write(&buf, "option forced-update\n");
+		}
+	}
+	packet_buf_flush(&buf);
+
+	if (use_sideband)
+		send_sideband(1, 1, buf.buf, buf.len, use_sideband);
+	else
+		write_or_die(1, buf.buf, buf.len);
+	strbuf_release(&buf);
+}
+
 static int delete_only(struct command *commands)
 {
 	struct command *cmd;
@@ -2055,7 +2507,9 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
 				 &push_options);
 		if (pack_lockfile)
 			unlink_or_warn(pack_lockfile);
-		if (report_status)
+		if (report_status_v2)
+			report_v2(commands, unpack_status);
+		else if (report_status)
 			report(commands, unpack_status);
 		run_receive_hook(commands, "post-receive", 1,
 				 &push_options);

builtin/send-pack.c

@@ -29,10 +29,12 @@ static struct send_pack_args args;
 static void print_helper_status(struct ref *ref)
 {
 	struct strbuf buf = STRBUF_INIT;
+	struct ref_push_report *report;
 
 	for (; ref; ref = ref->next) {
 		const char *msg = NULL;
 		const char *res;
+		int count = 0;
 
 		switch(ref->status) {
 		case REF_STATUS_NONE:
@@ -94,6 +96,23 @@ static void print_helper_status(struct ref *ref)
 		}
 		strbuf_addch(&buf, '\n');
 
+		if (ref->status == REF_STATUS_OK) {
+			for (report = ref->report; report; report = report->next) {
+				if (count++ > 0)
+					strbuf_addf(&buf, "ok %s\n", ref->name);
+				if (report->ref_name)
+					strbuf_addf(&buf, "option refname %s\n",
+						report->ref_name);
+				if (report->old_oid)
+					strbuf_addf(&buf, "option old-oid %s\n",
+						oid_to_hex(report->old_oid));
+				if (report->new_oid)
+					strbuf_addf(&buf, "option new-oid %s\n",
+						oid_to_hex(report->new_oid));
+				if (report->forced_update)
+					strbuf_addstr(&buf, "option forced-update\n");
+			}
+		}
 		write_or_die(1, buf.buf, buf.len);
 	}
 	strbuf_release(&buf);

remote.h

@@ -93,6 +93,14 @@ int for_each_remote(each_remote_fn fn, void *priv);
 
 int remote_has_url(struct remote *remote, const char *url);
 
+struct ref_push_report {
+	const char *ref_name;
+	struct object_id *old_oid;
+	struct object_id *new_oid;
+	unsigned int forced_update:1;
+	struct ref_push_report *next;
+};
+
 struct ref {
 	struct ref *next;
 	struct object_id old_oid;
@@ -140,6 +148,7 @@ struct ref {
 		REF_STATUS_ATOMIC_PUSH_FAILED
 	} status;
 	char *remote_status;
+	struct ref_push_report *report;
 	struct ref *peer_ref; /* when renaming */
 	char name[FLEX_ARRAY]; /* more */
 };

send-pack.c

@@ -154,25 +154,79 @@ static int receive_status(struct packet_reader *reader, struct ref *refs)
 {
 	struct ref *hint;
 	int ret;
+	struct ref_push_report *report = NULL;
+	int new_report = 0;
+	int once = 0;
 
 	hint = NULL;
 	ret = receive_unpack_status(reader);
 	while (1) {
+		struct object_id old_oid, new_oid;
+		const char *head;
 		const char *refname;
-		char *msg;
+		char *p;
 		if (packet_reader_read(reader) != PACKET_READ_NORMAL)
 			break;
-		if (!starts_with(reader->line, "ok ") && !starts_with(reader->line, "ng ")) {
+		head = reader->line;
-			error("invalid ref status from remote: %s", reader->line);
+		p = strchr(head, ' ');
+		if (!p) {
+			error("invalid status line from remote: %s", reader->line);
 			ret = -1;
 			break;
 		}
+		*p++ = '\0';
 
-		refname = reader->line + 3;
+		if (!strcmp(head, "option")) {
-		msg = strchr(refname, ' ');
+			const char *key, *val;
-		if (msg)
-			*msg++ = '\0';
 
+			if (!hint || !(report || new_report)) {
+				if (!once++)
+					error("'option' without a matching 'ok/ng' directive");
+				ret = -1;
+				continue;
+			}
+			if (new_report) {
+				if (!hint->report) {
+					hint->report = xcalloc(1, sizeof(struct ref_push_report));
+					report = hint->report;
+				} else {
+					report = hint->report;
+					while (report->next)
+						report = report->next;
+					report->next = xcalloc(1, sizeof(struct ref_push_report));
+					report = report->next;
+				}
+				new_report = 0;
+			}
+			key = p;
+			p = strchr(key, ' ');
+			if (p)
+				*p++ = '\0';
+			val = p;
+			if (!strcmp(key, "refname"))
+				report->ref_name = xstrdup_or_null(val);
+			else if (!strcmp(key, "old-oid") && val &&
+				 !parse_oid_hex(val, &old_oid, &val))
+				report->old_oid = oiddup(&old_oid);
+			else if (!strcmp(key, "new-oid") && val &&
+				 !parse_oid_hex(val, &new_oid, &val))
+				report->new_oid = oiddup(&new_oid);
+			else if (!strcmp(key, "forced-update"))
+				report->forced_update = 1;
+			continue;
+		}
+
+		report = NULL;
+		new_report = 0;
+		if (strcmp(head, "ok") && strcmp(head, "ng")) {
+			error("invalid ref status from remote: %s", head);
+			ret = -1;
+			break;
+		}
+		refname = p;
+		p = strchr(refname, ' ');
+		if (p)
+			*p++ = '\0';
 		/* first try searching at our hint, falling back to all refs */
 		if (hint)
 			hint = find_ref_by_name(hint, refname);
@@ -180,22 +234,27 @@ static int receive_status(struct packet_reader *reader, struct ref *refs)
 			hint = find_ref_by_name(refs, refname);
 		if (!hint) {
 			warning("remote reported status on unknown ref: %s",
-					refname);
+				refname);
 			continue;
 		}
-		if (hint->status != REF_STATUS_EXPECTING_REPORT) {
+		if (hint->status != REF_STATUS_EXPECTING_REPORT &&
+		    hint->status != REF_STATUS_OK &&
+		    hint->status != REF_STATUS_REMOTE_REJECT) {
 			warning("remote reported status on unexpected ref: %s",
-					refname);
+				refname);
 			continue;
 		}
-
+		if (!strcmp(head, "ng")) {
-		if (reader->line[0] == 'o' && reader->line[1] == 'k')
-			hint->status = REF_STATUS_OK;
-		else
 			hint->status = REF_STATUS_REMOTE_REJECT;
-		hint->remote_status = xstrdup_or_null(msg);
+			if (p)
-		/* start our next search from the next ref */
+				hint->remote_status = xstrdup(p);
-		hint = hint->next;
+			else
+				hint->remote_status = "failed";
+		} else {
+			hint->status = REF_STATUS_OK;
+			hint->remote_status = xstrdup_or_null(p);
+			new_report = 1;
+		}
 	}
 	return ret;
 }
@@ -371,7 +430,9 @@ int send_pack(struct send_pack_args *args,
 	struct packet_reader reader;
 
 	/* Does the other end support the reporting? */
-	if (server_supports("report-status"))
+	if (server_supports("report-status-v2"))
+		status_report = 2;
+	else if (server_supports("report-status"))
 		status_report = 1;
 	if (server_supports("delete-refs"))
 		allow_deleting_refs = 1;
@@ -423,8 +484,10 @@ int send_pack(struct send_pack_args *args,
 
 	use_push_options = push_options_supported && args->push_options;
 
-	if (status_report)
+	if (status_report == 1)
 		strbuf_addstr(&cap_buf, " report-status");
+	else if (status_report == 2)
+		strbuf_addstr(&cap_buf, " report-status-v2");
 	if (use_sideband)
 		strbuf_addstr(&cap_buf, " side-band-64k");
 	if (quiet_supported && (args->quiet || !args->progress))

t/helper/test-proc-receive.c

@@ -0,0 +1,176 @@
+#include "cache.h"
+#include "connect.h"
+#include "parse-options.h"
+#include "pkt-line.h"
+#include "sigchain.h"
+#include "test-tool.h"
+
+static const char *proc_receive_usage[] = {
+	"test-tool proc-receive [<options>...]",
+	NULL
+};
+
+static int die_version;
+static int die_readline;
+static int no_push_options;
+static int use_atomic;
+static int use_push_options;
+static int verbose;
+static int version = 1;
+static struct string_list returns = STRING_LIST_INIT_NODUP;
+
+struct command {
+	struct command *next;
+	const char *error_string;
+	unsigned int skip_update:1,
+		     did_not_exist:1;
+	int index;
+	struct object_id old_oid;
+	struct object_id new_oid;
+	char ref_name[FLEX_ARRAY]; /* more */
+};
+
+static void proc_receive_verison(struct packet_reader *reader) {
+	int server_version = 0;
+
+	for (;;) {
+		int linelen;
+
+		if (packet_reader_read(reader) != PACKET_READ_NORMAL)
+			break;
+
+		if (reader->pktlen > 8 && starts_with(reader->line, "version=")) {
+			server_version = atoi(reader->line+8);
+			linelen = strlen(reader->line);
+			if (linelen < reader->pktlen) {
+				const char *feature_list = reader->line + linelen + 1;
+				if (parse_feature_request(feature_list, "atomic"))
+					use_atomic= 1;
+				if (parse_feature_request(feature_list, "push-options"))
+					use_push_options = 1;
+			}
+		}
+	}
+
+	if (server_version != 1 || die_version)
+		die("bad protocol version: %d", server_version);
+
+	packet_write_fmt(1, "version=%d%c%s\n",
+			 version, '\0',
+			 use_push_options && !no_push_options ? "push-options": "");
+	packet_flush(1);
+}
+
+static void proc_receive_read_commands(struct packet_reader *reader,
+				       struct command **commands)
+{
+	struct command **tail = commands;
+
+	for (;;) {
+		struct object_id old_oid, new_oid;
+		struct command *cmd;
+		const char *refname;
+		const char *p;
+
+		if (packet_reader_read(reader) != PACKET_READ_NORMAL)
+			break;
+
+		if (parse_oid_hex(reader->line, &old_oid, &p) ||
+		    *p++ != ' ' ||
+		    parse_oid_hex(p, &new_oid, &p) ||
+		    *p++ != ' ' ||
+		    die_readline)
+			die("protocol error: expected 'old new ref', got '%s'",
+			    reader->line);
+		refname = p;
+		FLEX_ALLOC_STR(cmd, ref_name, refname);
+		oidcpy(&cmd->old_oid, &old_oid);
+		oidcpy(&cmd->new_oid, &new_oid);
+
+		*tail = cmd;
+		tail = &cmd->next;
+	}
+}
+
+static void proc_receive_read_push_options(struct packet_reader *reader,
+					   struct string_list *options)
+{
+
+	if (no_push_options || !use_push_options)
+	       return;
+
+	while (1) {
+		if (packet_reader_read(reader) != PACKET_READ_NORMAL)
+			break;
+
+		string_list_append(options, reader->line);
+	}
+}
+
+int cmd__proc_receive(int argc, const char **argv)
+{
+	int nongit_ok = 0;
+	struct packet_reader reader;
+	struct command *commands = NULL;
+	struct string_list push_options = STRING_LIST_INIT_DUP;
+	struct string_list_item *item;
+	struct option options[] = {
+		OPT_BOOL(0, "no-push-options", &no_push_options,
+			 "disable push options"),
+		OPT_BOOL(0, "die-version", &die_version,
+			 "die during version negotiation"),
+		OPT_BOOL(0, "die-readline", &die_readline,
+			 "die when readline"),
+		OPT_STRING_LIST('r', "return", &returns, "old/new/ref/status/msg",
+				"return of results"),
+		OPT__VERBOSE(&verbose, "be verbose"),
+		OPT_INTEGER('V', "version", &version,
+			    "use this protocol version number"),
+		OPT_END()
+	};
+
+	setup_git_directory_gently(&nongit_ok);
+
+	argc = parse_options(argc, argv, "test-tools", options, proc_receive_usage, 0);
+	if (argc > 0)
+		usage_msg_opt("Too many arguments.", proc_receive_usage, options);
+	packet_reader_init(&reader, 0, NULL, 0,
+			   PACKET_READ_CHOMP_NEWLINE |
+			   PACKET_READ_DIE_ON_ERR_PACKET);
+
+	sigchain_push(SIGPIPE, SIG_IGN);
+	proc_receive_verison(&reader);
+	proc_receive_read_commands(&reader, &commands);
+	proc_receive_read_push_options(&reader, &push_options);
+
+	if (verbose) {
+		struct command *cmd;
+
+		if (use_push_options || use_atomic)
+			fprintf(stderr, "proc-receive:%s%s\n",
+				use_atomic? " atomic": "",
+				use_push_options ? " push_options": "");
+
+		for (cmd = commands; cmd; cmd = cmd->next)
+			fprintf(stderr, "proc-receive< %s %s %s\n",
+				oid_to_hex(&cmd->old_oid),
+				oid_to_hex(&cmd->new_oid),
+				cmd->ref_name);
+
+		if (push_options.nr > 0)
+			for_each_string_list_item(item, &push_options)
+				fprintf(stderr, "proc-receive< %s\n", item->string);
+
+		if (returns.nr)
+			for_each_string_list_item(item, &returns)
+				fprintf(stderr, "proc-receive> %s\n", item->string);
+	}
+
+	if (returns.nr)
+		for_each_string_list_item(item, &returns)
+			packet_write_fmt(1, "%s\n", item->string);
+	packet_flush(1);
+	sigchain_pop(SIGPIPE);
+
+	return 0;
+}

t/helper/test-tool.c

@@ -46,6 +46,7 @@ static struct test_cmd cmds[] = {
 	{ "path-utils", cmd__path_utils },
 	{ "pkt-line", cmd__pkt_line },
 	{ "prio-queue", cmd__prio_queue },
+	{ "proc-receive", cmd__proc_receive},
 	{ "progress", cmd__progress },
 	{ "reach", cmd__reach },
 	{ "read-cache", cmd__read_cache },

t/helper/test-tool.h

@@ -35,6 +35,7 @@ int cmd__parse_pathspec_file(int argc, const char** argv);
 int cmd__path_utils(int argc, const char **argv);
 int cmd__pkt_line(int argc, const char **argv);
 int cmd__prio_queue(int argc, const char **argv);
+int cmd__proc_receive(int argc, const char **argv);
 int cmd__progress(int argc, const char **argv);
 int cmd__reach(int argc, const char **argv);
 int cmd__read_cache(int argc, const char **argv);

t/t5411-proc-receive-hook.sh

@@ -0,0 +1,117 @@
+#!/bin/sh
+#
+# Copyright (c) 2020 Jiang Xin
+#
+
+test_description='Test proc-receive hook'
+
+. ./test-lib.sh
+
+. "$TEST_DIRECTORY"/t5411/common-functions.sh
+
+setup_upstream_and_workbench () {
+	# Refs of upstream : master(A)
+	# Refs of workbench: master(A)  tags/v123
+	test_expect_success "setup upstream and workbench" '
+		rm -rf upstream.git &&
+		rm -rf workbench &&
+		git init --bare upstream.git &&
+		git init workbench &&
+		create_commits_in workbench A B &&
+		(
+			cd workbench &&
+			# Try to make a stable fixed width for abbreviated commit ID,
+			# this fixed-width oid will be replaced with "<OID>".
+			git config core.abbrev 7 &&
+			git tag -m "v123" v123 $A &&
+			git remote add origin ../upstream.git &&
+			git push origin master &&
+			git update-ref refs/heads/master $A $B &&
+			git -C ../upstream.git update-ref \
+				refs/heads/master $A $B
+		) &&
+		TAG=$(git -C workbench rev-parse v123) &&
+
+		# setup pre-receive hook
+		write_script upstream.git/hooks/pre-receive <<-\EOF &&
+		exec >&2
+		echo "# pre-receive hook"
+		while read old new ref
+		do
+			echo "pre-receive< $old $new $ref"
+		done
+		EOF
+
+		# setup post-receive hook
+		write_script upstream.git/hooks/post-receive <<-\EOF &&
+		exec >&2
+		echo "# post-receive hook"
+		while read old new ref
+		do
+			echo "post-receive< $old $new $ref"
+		done
+		EOF
+
+		upstream=upstream.git
+	'
+}
+
+run_proc_receive_hook_test() {
+	case $1 in
+	http)
+		PROTOCOL="HTTP protocol"
+		URL_PREFIX="http://.*"
+		;;
+	local)
+		PROTOCOL="builtin protocol"
+		URL_PREFIX="\.\."
+		;;
+	esac
+
+	# Include test cases for both file and HTTP protocol
+	for t in  "$TEST_DIRECTORY"/t5411/test-*.sh
+	do
+		. "$t"
+	done
+}
+
+# Initialize the upstream repository and local workbench.
+setup_upstream_and_workbench
+
+# Load test cases that only need to be executed once.
+for t in  "$TEST_DIRECTORY"/t5411/once-*.sh
+do
+	. "$t"
+done
+
+# Initialize the upstream repository and local workbench.
+setup_upstream_and_workbench
+
+# Run test cases for 'proc-receive' hook on local file protocol.
+run_proc_receive_hook_test local
+
+ROOT_PATH="$PWD"
+. "$TEST_DIRECTORY"/lib-gpg.sh
+. "$TEST_DIRECTORY"/lib-httpd.sh
+. "$TEST_DIRECTORY"/lib-terminal.sh
+start_httpd
+
+# Re-initialize the upstream repository and local workbench.
+setup_upstream_and_workbench
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "setup for HTTP protocol" '
+	git -C upstream.git config http.receivepack true &&
+	upstream="$HTTPD_DOCUMENT_ROOT_PATH/upstream.git" &&
+	mv upstream.git "$upstream" &&
+	git -C workbench remote set-url origin "$HTTPD_URL/auth-push/smart/upstream.git" &&
+	set_askpass user@host pass@host
+'
+
+setup_askpass_helper
+
+# Run test cases for 'proc-receive' hook on HTTP protocol.
+run_proc_receive_hook_test http
+
+test_done

t/t5411/common-functions.sh

@@ -0,0 +1,56 @@
+# Create commits in <repo> and assign each commit's oid to shell variables
+# given in the arguments (A, B, and C). E.g.:
+#
+#     create_commits_in <repo> A B C
+#
+# NOTE: Never calling this function from a subshell since variable
+# assignments will disappear when subshell exits.
+create_commits_in () {
+	repo="$1" &&
+	if ! parent=$(git -C "$repo" rev-parse HEAD^{} --)
+	then
+		parent=
+	fi &&
+	T=$(git -C "$repo" write-tree) &&
+	shift &&
+	while test $# -gt 0
+	do
+		name=$1 &&
+		test_tick &&
+		if test -z "$parent"
+		then
+			oid=$(echo $name | git -C "$repo" commit-tree $T)
+		else
+			oid=$(echo $name | git -C "$repo" commit-tree -p $parent $T)
+		fi &&
+		eval $name=$oid &&
+		parent=$oid &&
+		shift ||
+		return 1
+	done &&
+	git -C "$repo" update-ref refs/heads/master $oid
+}
+
+# Format the output of git-push, git-show-ref and other commands to make a
+# user-friendly and stable text.  We can easily prepare the expect text
+# without having to worry about future changes of the commit ID and spaces
+# of the output.  Single quotes are replaced with double quotes, because
+# it is boring to prepare unquoted single quotes in expect text.  We also
+# remove some locale error messages, which break test if we turn on
+# `GIT_TEST_GETTEXT_POISON=true` in order to test unintentional translations
+# on plumbing commands.
+make_user_friendly_and_stable_output () {
+	sed \
+		-e "s/  *\$//" \
+		-e "s/   */ /g" \
+		-e "s/'/\"/g" \
+		-e "s/	/    /g" \
+		-e "s/$A/<COMMIT-A>/g" \
+		-e "s/$B/<COMMIT-B>/g" \
+		-e "s/$TAG/<TAG-v123>/g" \
+		-e "s/$ZERO_OID/<ZERO-OID>/g" \
+		-e "s/$(echo $A | cut -c1-7)[0-9a-f]*/<OID-A>/g" \
+		-e "s/$(echo $B | cut -c1-7)[0-9a-f]*/<OID-B>/g" \
+		-e "s#To $URL_PREFIX/upstream.git#To <URL/of/upstream.git>#" \
+		-e "/^error: / d"
+}

t/t5411/once-0010-report-status-v1.sh

@@ -0,0 +1,94 @@
+test_expect_success "setup receive.procReceiveRefs" '
+	git -C "$upstream" config --add receive.procReceiveRefs refs/for
+'
+
+test_expect_success "setup proc-receive hook" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic1" \
+		-r "option fall-through" \
+		-r "ok refs/for/master/topic2" \
+		-r "option refname refs/for/changes/23/123/1" \
+		-r "option new-oid $A" \
+		-r "ok refs/for/master/topic2" \
+		-r "option refname refs/for/changes/24/124/2" \
+		-r "option old-oid $B" \
+		-r "option new-oid $A" \
+		-r "option forced-update" \
+		-r "ng refs/for/next/topic target branch not exist"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         : (B)                   refs/for/master/topic1(A)  foo(A)  refs/for/next/topic(A)  refs/for/master/topic2(A)
+test_expect_success "proc-receive: report status v1" '
+	{
+		if test -z "$GIT_DEFAULT_HASH" || test "$GIT_DEFAULT_HASH" = "sha1"
+		then
+			printf "%s %s refs/heads/master\0report-status\n" \
+				$A $B | packetize
+		else
+			printf "%s %s refs/heads/master\0report-status object-format=$GIT_DEFAULT_HASH\n" \
+				$A $B | packetize
+		fi &&
+		printf "%s %s refs/for/master/topic1\n" \
+			$ZERO_OID $A | packetize &&
+		printf "%s %s refs/heads/foo\n" \
+			$ZERO_OID $A | packetize &&
+		printf "%s %s refs/for/next/topic\n" \
+			$ZERO_OID $A | packetize &&
+		printf "%s %s refs/for/master/topic2\n" \
+			$ZERO_OID $A | packetize &&
+		printf 0000 &&
+		printf "" | git -C "$upstream" pack-objects --stdout
+	} | git receive-pack "$upstream" --stateless-rpc \
+	>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	# pre-receive hook
+	pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic1
+	pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/foo
+	pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic2
+	# proc-receive hook
+	proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic1
+	proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic2
+	proc-receive> ok refs/for/master/topic1
+	proc-receive> option fall-through
+	proc-receive> ok refs/for/master/topic2
+	proc-receive> option refname refs/for/changes/23/123/1
+	proc-receive> option new-oid <COMMIT-A>
+	proc-receive> ok refs/for/master/topic2
+	proc-receive> option refname refs/for/changes/24/124/2
+	proc-receive> option old-oid <COMMIT-B>
+	proc-receive> option new-oid <COMMIT-A>
+	proc-receive> option forced-update
+	proc-receive> ng refs/for/next/topic target branch not exist
+	000eunpack ok
+	0019ok refs/heads/master
+	001eok refs/for/master/topic1
+	0016ok refs/heads/foo
+	0033ng refs/for/next/topic target branch not exist
+	001eok refs/for/master/topic2
+	0000# post-receive hook
+	post-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	post-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic1
+	post-receive< <ZERO-OID> <COMMIT-A> refs/heads/foo
+	post-receive< <ZERO-OID> <COMMIT-A> refs/for/changes/23/123/1
+	post-receive< <COMMIT-B> <COMMIT-A> refs/for/changes/24/124/2
+	EOF
+	test_cmp expect actual &&
+
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/for/master/topic1
+	<COMMIT-A> refs/heads/foo
+	<COMMIT-B> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0000-standard-git-push.sh

@@ -0,0 +1,143 @@
+# Refs of upstream : master(A)  
+# Refs of workbench: master(A)  tags/v123
+# git-push         : master(B)             next(A)
+test_expect_success "git-push ($PROTOCOL)" '
+	git -C workbench push origin \
+		$B:refs/heads/master \
+		HEAD:refs/heads/next \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	To <URL/of/upstream.git>
+	 <OID-A>..<OID-B> <COMMIT-B> -> master
+	 * [new branch] HEAD -> next
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)  next(A)
+# Refs of workbench: master(A)           tags/v123
+# git-push --atomic: master(A)  next(B)
+test_expect_success "git-push --atomic ($PROTOCOL)" '
+	test_must_fail git -C workbench push --atomic origin \
+		master \
+		$B:refs/heads/next \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out |
+		sed -n \
+			-e "/^To / { s/   */ /g; p; }" \
+			-e "/^ ! / { s/   */ /g; p; }" \
+			>actual &&
+	cat >expect <<-EOF &&
+	To <URL/of/upstream.git>
+	 ! [rejected] master -> master (non-fast-forward)
+	 ! [rejected] <COMMIT-B> -> next (atomic push failed)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)  next(A)
+# Refs of workbench: master(A)           tags/v123
+# git-push         : master(A)  next(B)
+test_expect_success "non-fast-forward git-push ($PROTOCOL)" '
+	test_must_fail git \
+		-C workbench \
+		-c advice.pushUpdateRejected=false \
+		push origin \
+		master \
+		$B:refs/heads/next \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/next
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/next
+	To <URL/of/upstream.git>
+	 <OID-A>..<OID-B> <COMMIT-B> -> next
+	 ! [rejected] master -> master (non-fast-forward)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/master
+	<COMMIT-B> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)  next(B)
+# Refs of workbench: master(A)           tags/v123
+# git-push -f      : master(A)  NULL     tags/v123  refs/review/master/topic(A)  a/b/c(A)
+test_expect_success "git-push -f ($PROTOCOL)" '
+	git -C workbench push -f origin \
+		refs/tags/v123 \
+		:refs/heads/next \
+		master \
+		master:refs/review/master/topic \
+		HEAD:refs/heads/a/b/c \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: pre-receive< <COMMIT-B> <ZERO-OID> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <TAG-v123> refs/tags/v123
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/review/master/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/a/b/c
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: post-receive< <COMMIT-B> <ZERO-OID> refs/heads/next
+	remote: post-receive< <ZERO-OID> <TAG-v123> refs/tags/v123
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/review/master/topic
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/a/b/c
+	To <URL/of/upstream.git>
+	 + <OID-B>...<OID-A> master -> master (forced update)
+	 - [deleted] next
+	 * [new tag] v123 -> v123
+	 * [new reference] master -> refs/review/master/topic
+	 * [new branch] HEAD -> a/b/c
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/a/b/c
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/review/master/topic
+	<TAG-v123> refs/tags/v123
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)  tags/v123  refs/review/master/topic(A)  a/b/c(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL)" '
+	(
+		cd "$upstream" &&
+		git update-ref -d refs/review/master/topic &&
+		git update-ref -d refs/tags/v123 &&
+		git update-ref -d refs/heads/a/b/c
+	)
+'

t/t5411/test-0001-standard-git-push--porcelain.sh

@@ -0,0 +1,147 @@
+# Refs of upstream : master(A)  
+# Refs of workbench: master(A)  tags/v123
+# git-push         : master(B)             next(A)
+test_expect_success "git-push ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		$B:refs/heads/master \
+		HEAD:refs/heads/next \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	To <URL/of/upstream.git>
+	     <COMMIT-B>:refs/heads/master    <OID-A>..<OID-B>
+	*    HEAD:refs/heads/next    [new branch]
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)  next(A)
+# Refs of workbench: master(A)           tags/v123
+# git-push --atomic: master(A)  next(B)
+test_expect_success "git-push --atomic ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --atomic --porcelain origin \
+		master \
+		$B:refs/heads/next \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out |
+		sed -n \
+			-e "s/^# GETTEXT POISON #//" \
+			-e "/^To / { s/   */ /g; p; }" \
+			-e "/^! / { s/   */ /g; p; }" \
+			>actual &&
+	cat >expect <<-EOF &&
+	To <URL/of/upstream.git>
+	! refs/heads/master:refs/heads/master [rejected] (non-fast-forward)
+	! <COMMIT-B>:refs/heads/next [rejected] (atomic push failed)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)  next(A)
+# Refs of workbench: master(A)           tags/v123
+# git-push         : master(A)  next(B)
+test_expect_success "non-fast-forward git-push ($PROTOCOL/porcelain)" '
+	test_must_fail git \
+		-C workbench \
+		-c advice.pushUpdateRejected=false \
+		push --porcelain origin \
+		master \
+		$B:refs/heads/next \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/next
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/next
+	To <URL/of/upstream.git>
+	     <COMMIT-B>:refs/heads/next    <OID-A>..<OID-B>
+	!    refs/heads/master:refs/heads/master    [rejected] (non-fast-forward)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/master
+	<COMMIT-B> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)  next(B)
+# Refs of workbench: master(A)           tags/v123
+# git-push -f      : master(A)  NULL     tags/v123  refs/review/master/topic(A)  a/b/c(A)
+test_expect_success "git-push -f ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain -f origin \
+		refs/tags/v123 \
+		:refs/heads/next \
+		master \
+		master:refs/review/master/topic \
+		HEAD:refs/heads/a/b/c \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: pre-receive< <COMMIT-B> <ZERO-OID> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <TAG-v123> refs/tags/v123
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/review/master/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/a/b/c
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: post-receive< <COMMIT-B> <ZERO-OID> refs/heads/next
+	remote: post-receive< <ZERO-OID> <TAG-v123> refs/tags/v123
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/review/master/topic
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/a/b/c
+	To <URL/of/upstream.git>
+	+    refs/heads/master:refs/heads/master    <OID-B>...<OID-A> (forced update)
+	-    :refs/heads/next    [deleted]
+	*    refs/tags/v123:refs/tags/v123    [new tag]
+	*    refs/heads/master:refs/review/master/topic    [new reference]
+	*    HEAD:refs/heads/a/b/c    [new branch]
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/a/b/c
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/review/master/topic
+	<TAG-v123> refs/tags/v123
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)  tags/v123  refs/review/master/topic(A)  a/b/c(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	(
+		cd "$upstream" &&
+		git update-ref -d refs/review/master/topic &&
+		git update-ref -d refs/tags/v123 &&
+		git update-ref -d refs/heads/a/b/c
+	)
+'

t/t5411/test-0002-pre-receive-declined.sh

@@ -0,0 +1,33 @@
+test_expect_success "setup pre-receive hook ($PROTOCOL)" '
+	mv "$upstream/hooks/pre-receive" "$upstream/hooks/pre-receive.ok" &&
+	write_script "$upstream/hooks/pre-receive" <<-EOF
+	exit 1
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git-push         : master(B)             next(A)
+test_expect_success "git-push is declined ($PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		$B:refs/heads/master \
+		HEAD:refs/heads/next \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	To <URL/of/upstream.git>
+	 ! [remote rejected] <COMMIT-B> -> master (pre-receive hook declined)
+	 ! [remote rejected] HEAD -> next (pre-receive hook declined)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "cleanup ($PROTOCOL)" '
+	mv "$upstream/hooks/pre-receive.ok" "$upstream/hooks/pre-receive"
+'

t/t5411/test-0003-pre-receive-declined--porcelain.sh

@@ -0,0 +1,34 @@
+test_expect_success "setup pre-receive hook ($PROTOCOL/porcelain)" '
+	mv "$upstream/hooks/pre-receive" "$upstream/hooks/pre-receive.ok" &&
+	write_script "$upstream/hooks/pre-receive" <<-EOF
+	exit 1
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git-push         : master(B)             next(A)
+test_expect_success "git-push is declined ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		$B:refs/heads/master \
+		HEAD:refs/heads/next \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	To <URL/of/upstream.git>
+	!    <COMMIT-B>:refs/heads/master    [remote rejected] (pre-receive hook declined)
+	!    HEAD:refs/heads/next    [remote rejected] (pre-receive hook declined)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	mv "$upstream/hooks/pre-receive.ok" "$upstream/hooks/pre-receive"
+'

t/t5411/test-0010-proc-receive-settings.sh

@@ -0,0 +1,7 @@
+test_expect_success "add two receive.procReceiveRefs settings" '
+	(
+		cd "$upstream" &&
+		git config --add receive.procReceiveRefs refs/for &&
+		git config --add receive.procReceiveRefs refs/review/
+	)
+'

t/t5411/test-0011-no-hook-error.sh

@@ -0,0 +1,64 @@
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       next(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: no hook, fail to push special ref ($PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:next \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: error: cannot find hook "proc-receive"
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	To <URL/of/upstream.git>
+	 * [new branch] HEAD -> next
+	 ! [remote rejected] HEAD -> refs/for/master/topic (fail to run proc-receive hook)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             next(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL)" '
+	git -C "$upstream" update-ref -d refs/heads/next
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push --atomic: (B)                   next(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: no hook, all failed for atomic push ($PROTOCOL)" '
+	test_must_fail git -C workbench push --atomic origin \
+		$B:master \
+		HEAD:next \
+		HEAD:refs/for/master/topic >out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: error: cannot find hook "proc-receive"
+	To <URL/of/upstream.git>
+	 ! [remote rejected] <COMMIT-B> -> master (fail to run proc-receive hook)
+	 ! [remote rejected] HEAD -> next (fail to run proc-receive hook)
+	 ! [remote rejected] HEAD -> refs/for/master/topic (fail to run proc-receive hook)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0012-no-hook-error--porcelain.sh

@@ -0,0 +1,66 @@
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       next(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: no hook, fail to push special ref ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		HEAD:next \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: error: cannot find hook "proc-receive"
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	To <URL/of/upstream.git>
+	*    HEAD:refs/heads/next    [new branch]
+	!    HEAD:refs/for/master/topic    [remote rejected] (fail to run proc-receive hook)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             next(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	git -C "$upstream" update-ref -d refs/heads/next
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push --atomic: (B)                   next(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: no hook, all failed for atomic push ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain --atomic origin \
+		$B:master \
+		HEAD:next \
+		HEAD:refs/for/master/topic >out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: error: cannot find hook "proc-receive"
+	To <URL/of/upstream.git>
+	!    <COMMIT-B>:refs/heads/master    [remote rejected] (fail to run proc-receive hook)
+	!    HEAD:refs/heads/next    [remote rejected] (fail to run proc-receive hook)
+	!    HEAD:refs/for/master/topic    [remote rejected] (fail to run proc-receive hook)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0013-bad-protocol.sh

@@ -0,0 +1,217 @@
+test_expect_success "setup proc-receive hook (unknown version, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v --version 2
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: bad protocol (unknown version, $PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+
+	# Check status report for git-push
+	sed -n \
+		-e "/^To / { p; n; p; }" \
+		<actual >actual-report &&
+	cat >expect <<-EOF &&
+	To <URL/of/upstream.git>
+	 ! [remote rejected] HEAD -> refs/for/master/topic (fail to run proc-receive hook)
+	EOF
+	test_cmp expect actual-report &&
+
+	# Check error message from "receive-pack", but ignore unstable fatal error
+	# message ("remote: fatal: the remote end hung up unexpectedly") which
+	# is different from the remote HTTP server with different locale settings.
+	grep "^remote: error:" <actual >actual-error &&
+	cat >expect <<-EOF &&
+	remote: error: proc-receive version "2" is not supported
+	EOF
+	test_cmp expect actual-error &&
+
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (hook --die-version, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v --die-version
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: bad protocol (hook --die-version, $PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: fatal: bad protocol version: 1
+	remote: error: proc-receive version "0" is not supported
+	To <URL/of/upstream.git>
+	 ! [remote rejected] HEAD -> refs/for/master/topic (fail to run proc-receive hook)
+	EOF
+	test_cmp expect actual &&
+
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (hook --die-readline, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v --die-readline
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: bad protocol (hook --die-readline, $PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+
+	grep "remote: fatal: protocol error: expected \"old new ref\", got \"<ZERO-OID> <COMMIT-A> refs/for/master/topic\"" actual &&
+
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (no report, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       next(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: bad protocol (no report, $PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/heads/next \
+		HEAD:refs/for/master/topic >out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	To <URL/of/upstream.git>
+	 * [new branch] HEAD -> next
+	 ! [remote rejected] HEAD -> refs/for/master/topic (proc-receive failed to report status)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             next(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL)" '
+	git -C "$upstream" update-ref -d refs/heads/next
+
+'
+
+test_expect_success "setup proc-receive hook (no ref, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: bad protocol (no ref, $PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/for/master/topic\
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok
+	remote: error: proc-receive reported incomplete status line: "ok"
+	To <URL/of/upstream.git>
+	 ! [remote rejected] HEAD -> refs/for/master/topic (proc-receive failed to report status)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (unknown status, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "xx refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: bad protocol (unknown status, $PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+			HEAD:refs/for/master/topic \
+			>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> xx refs/for/master/topic
+	remote: error: proc-receive reported bad status "xx" on ref "refs/for/master/topic"
+	To <URL/of/upstream.git>
+	 ! [remote rejected] HEAD -> refs/for/master/topic (proc-receive failed to report status)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0014-bad-protocol--porcelain.sh

@@ -0,0 +1,160 @@
+test_expect_success "setup proc-receive hook (unknown version, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v --version 2
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: bad protocol (unknown version, $PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+
+	# Check status report for git-push
+	sed -n \
+		-e "/^To / { p; n; p; n; p; }" \
+		<actual >actual-report &&
+	cat >expect <<-EOF &&
+	To <URL/of/upstream.git>
+	!    HEAD:refs/for/master/topic    [remote rejected] (fail to run proc-receive hook)
+	Done
+	EOF
+	test_cmp expect actual-report &&
+
+	# Check error message from "receive-pack", but ignore unstable fatal error
+	# message ("remote: fatal: the remote end hung up unexpectedly") which
+	# is different from the remote HTTP server with different locale settings.
+	grep "^remote: error:" <actual >actual-error &&
+	cat >expect <<-EOF &&
+	remote: error: proc-receive version "2" is not supported
+	EOF
+	test_cmp expect actual-error &&
+
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (no report, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       next(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: bad protocol (no report, $PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		HEAD:refs/heads/next \
+		HEAD:refs/for/master/topic >out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	To <URL/of/upstream.git>
+	*    HEAD:refs/heads/next    [new branch]
+	!    HEAD:refs/for/master/topic    [remote rejected] (proc-receive failed to report status)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             next(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	git -C "$upstream" update-ref -d refs/heads/next
+
+'
+
+test_expect_success "setup proc-receive hook (no ref, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: bad protocol (no ref, $PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic\
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok
+	remote: error: proc-receive reported incomplete status line: "ok"
+	To <URL/of/upstream.git>
+	!    HEAD:refs/for/master/topic    [remote rejected] (proc-receive failed to report status)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (unknown status, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "xx refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: bad protocol (unknown status, $PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+			HEAD:refs/for/master/topic \
+			>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> xx refs/for/master/topic
+	remote: error: proc-receive reported bad status "xx" on ref "refs/for/master/topic"
+	To <URL/of/upstream.git>
+	!    HEAD:refs/for/master/topic    [remote rejected] (proc-receive failed to report status)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0020-report-ng.sh

@@ -0,0 +1,67 @@
+test_expect_success "setup proc-receive hook (ng, no message, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ng refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: fail to update (ng, no message, $PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ng refs/for/master/topic
+	To <URL/of/upstream.git>
+	 ! [remote rejected] HEAD -> refs/for/master/topic (failed)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (ng message, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ng refs/for/master/topic error msg"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: fail to update (ng, with message, $PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ng refs/for/master/topic error msg
+	To <URL/of/upstream.git>
+	 ! [remote rejected] HEAD -> refs/for/master/topic (error msg)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0021-report-ng--porcelain.sh

@@ -0,0 +1,69 @@
+test_expect_success "setup proc-receive hook (ng, no message, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ng refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: fail to update (ng, no message, $PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ng refs/for/master/topic
+	To <URL/of/upstream.git>
+	!    HEAD:refs/for/master/topic    [remote rejected] (failed)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (ng message, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ng refs/for/master/topic error msg"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: fail to update (ng, with message, $PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ng refs/for/master/topic error msg
+	To <URL/of/upstream.git>
+	!    HEAD:refs/for/master/topic    [remote rejected] (error msg)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0022-report-unexpect-ref.sh

@@ -0,0 +1,45 @@
+test_expect_success "setup proc-receive hook (unexpected ref, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/heads/master"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         : (B)                   refs/for/master/topic
+test_expect_success "proc-receive: report unexpected ref ($PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		$B:refs/heads/master \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/heads/master
+	remote: error: proc-receive reported status on unexpected ref: refs/heads/master
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	To <URL/of/upstream.git>
+	 <OID-A>..<OID-B> <COMMIT-B> -> master
+	 ! [remote rejected] HEAD -> refs/for/master/topic (proc-receive failed to report status)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL)" '
+	git -C "$upstream" update-ref refs/heads/master $A
+'

t/t5411/test-0023-report-unexpect-ref--porcelain.sh

@@ -0,0 +1,46 @@
+test_expect_success "setup proc-receive hook (unexpected ref, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/heads/master"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         : (B)                   refs/for/master/topic
+test_expect_success "proc-receive: report unexpected ref ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		$B:refs/heads/master \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/heads/master
+	remote: error: proc-receive reported status on unexpected ref: refs/heads/master
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	To <URL/of/upstream.git>
+	     <COMMIT-B>:refs/heads/master    <OID-A>..<OID-B>
+	!    HEAD:refs/for/master/topic    [remote rejected] (proc-receive failed to report status)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	git -C "$upstream" update-ref refs/heads/master $A
+'

t/t5411/test-0024-report-unknown-ref.sh

@@ -0,0 +1,34 @@
+test_expect_success "setup proc-receive hook (unexpected ref, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/a/b/c/my/topic
+test_expect_success "proc-receive: report unknown reference ($PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/for/a/b/c/my/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/my/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/my/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: error: proc-receive reported status on unknown ref: refs/for/master/topic
+	To <URL/of/upstream.git>
+	 ! [remote rejected] HEAD -> refs/for/a/b/c/my/topic (proc-receive failed to report status)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0025-report-unknown-ref--porcelain.sh

@@ -0,0 +1,35 @@
+test_expect_success "setup proc-receive hook (unexpected ref, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/a/b/c/my/topic
+test_expect_success "proc-receive: report unknown reference ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		HEAD:refs/for/a/b/c/my/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/my/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/my/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: error: proc-receive reported status on unknown ref: refs/for/master/topic
+	To <URL/of/upstream.git>
+	!    HEAD:refs/for/a/b/c/my/topic    [remote rejected] (proc-receive failed to report status)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0026-push-options.sh

@@ -0,0 +1,79 @@
+test_expect_success "setup proc-receive hook and disable push-options ($PROTOCOL)" '
+	git -C "$upstream" config receive.advertisePushOptions false &&
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push -o ...  :                       refs/for/master/topic
+test_expect_success "proc-receive: not support push options ($PROTOCOL)" '
+	test_must_fail git -C workbench push \
+		-o issue=123 \
+		-o reviewer=user1 \
+		origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	test_i18ngrep "fatal: the receiving end does not support push options" \
+		actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "enable push options ($PROTOCOL)" '
+	git -C "$upstream" config receive.advertisePushOptions true
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push -o ...  :                       next(A)  refs/for/master/topic
+test_expect_success "proc-receive: push with options ($PROTOCOL)" '
+	git -C workbench push \
+		--atomic \
+		-o issue=123 \
+		-o reviewer=user1 \
+		origin \
+		HEAD:refs/heads/next \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive: atomic push_options
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive< issue=123
+	remote: proc-receive< reviewer=user1
+	remote: proc-receive> ok refs/for/master/topic
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	To <URL/of/upstream.git>
+	 * [new branch] HEAD -> next
+	 * [new reference] HEAD -> refs/for/master/topic
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             next(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL)" '
+	git -C "$upstream" update-ref -d refs/heads/next
+'

t/t5411/test-0027-push-options--porcelain.sh

@@ -0,0 +1,82 @@
+test_expect_success "setup proc-receive hook and disable push-options ($PROTOCOL/porcelain)" '
+	git -C "$upstream" config receive.advertisePushOptions false &&
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push -o ...  :                       refs/for/master/topic
+test_expect_success "proc-receive: not support push options ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push \
+		--porcelain \
+		-o issue=123 \
+		-o reviewer=user1 \
+		origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	test_i18ngrep "fatal: the receiving end does not support push options" \
+		actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "enable push options ($PROTOCOL/porcelain)" '
+	git -C "$upstream" config receive.advertisePushOptions true
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push -o ...  :                       next(A)  refs/for/master/topic
+test_expect_success "proc-receive: push with options ($PROTOCOL/porcelain)" '
+	git -C workbench push \
+		--porcelain \
+		--atomic \
+		-o issue=123 \
+		-o reviewer=user1 \
+		origin \
+		HEAD:refs/heads/next \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive: atomic push_options
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive< issue=123
+	remote: proc-receive< reviewer=user1
+	remote: proc-receive> ok refs/for/master/topic
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	To <URL/of/upstream.git>
+	*    HEAD:refs/heads/next    [new branch]
+	*    HEAD:refs/for/master/topic    [new reference]
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/heads/next
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             next(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	git -C "$upstream" update-ref -d refs/heads/next
+'

t/t5411/test-0030-report-ok.sh

@@ -0,0 +1,35 @@
+test_expect_success "setup proc-receive hook (ok, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: ok ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	To <URL/of/upstream.git>
+	 * [new reference] HEAD -> refs/for/master/topic
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0031-report-ok--porcelain.sh

@@ -0,0 +1,36 @@
+test_expect_success "setup proc-receive hook (ok, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic
+test_expect_success "proc-receive: ok ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	To <URL/of/upstream.git>
+	*    HEAD:refs/for/master/topic    [new reference]
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0032-report-with-options.sh

@@ -0,0 +1,256 @@
+test_expect_success "setup proc-receive hook (option without matching ok, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "option refname refs/pull/123/head" \
+		-r "option old-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option without matching ok ($PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: error: proc-receive reported "option" without a matching "ok/ng" directive
+	To <URL/of/upstream.git>
+	 ! [remote rejected] HEAD -> refs/for/master/topic (proc-receive failed to report status)
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option refname, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/123/head"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option refname ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/pull/123/head
+	To <URL/of/upstream.git>
+	 * [new reference] HEAD -> refs/pull/123/head
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option refname and forced-update, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/123/head" \
+		-r "option forced-update"
+	EOF
+'
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option refname and forced-update ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option forced-update
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/pull/123/head
+	To <URL/of/upstream.git>
+	 * [new reference] HEAD -> refs/pull/123/head
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option refname and old-oid, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/123/head" \
+		-r "option old-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option refname and old-oid ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/pull/123/head
+	To <URL/of/upstream.git>
+	 <OID-B>..<OID-A> HEAD -> refs/pull/123/head
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option old-oid, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option old-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option old-oid ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/for/master/topic
+	To <URL/of/upstream.git>
+	 <OID-B>..<OID-A> HEAD -> refs/for/master/topic
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option old-oid and new-oid, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option old-oid and new-oid ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/for/master/topic
+	To <URL/of/upstream.git>
+	 <OID-A>..<OID-B> HEAD -> refs/for/master/topic
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (report with multiple rewrites, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/a/b/c/topic" \
+		-r "ok refs/for/next/topic" \
+		-r "option refname refs/pull/123/head" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/124/head" \
+		-r "option old-oid $B" \
+		-r "option forced-update" \
+		-r "option new-oid $A"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report with multiple rewrites ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/next/topic \
+		HEAD:refs/for/a/b/c/topic \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/topic
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/a/b/c/topic
+	remote: proc-receive> ok refs/for/next/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/124/head
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: proc-receive> option forced-update
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/pull/123/head
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/topic
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/pull/124/head
+	To <URL/of/upstream.git>
+	 * [new reference] HEAD -> refs/pull/123/head
+	 * [new reference] HEAD -> refs/for/a/b/c/topic
+	 + <OID-B>...<OID-A> HEAD -> refs/pull/124/head (forced update)
+	EOF
+	test_cmp expect actual &&
+
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0033-report-with-options--porcelain.sh

@@ -0,0 +1,265 @@
+test_expect_success "setup proc-receive hook (option without matching ok, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "option refname refs/pull/123/head" \
+		-r "option old-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option without matching ok ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: error: proc-receive reported "option" without a matching "ok/ng" directive
+	To <URL/of/upstream.git>
+	!    HEAD:refs/for/master/topic    [remote rejected] (proc-receive failed to report status)
+	Done
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option refname, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/123/head"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option refname ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/pull/123/head
+	To <URL/of/upstream.git>
+	*    HEAD:refs/pull/123/head    [new reference]
+	Done
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option refname and forced-update, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/123/head" \
+		-r "option forced-update"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option refname and forced-update ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option forced-update
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/pull/123/head
+	To <URL/of/upstream.git>
+	*    HEAD:refs/pull/123/head    [new reference]
+	Done
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option refname and old-oid, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/123/head" \
+		-r "option old-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option refname and old-oid ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/pull/123/head
+	To <URL/of/upstream.git>
+	     HEAD:refs/pull/123/head    <OID-B>..<OID-A>
+	Done
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option old-oid, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option old-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option old-oid ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/for/master/topic
+	To <URL/of/upstream.git>
+	     HEAD:refs/for/master/topic    <OID-B>..<OID-A>
+	Done
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (option old-oid and new-oid, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report option old-oid and new-oid ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/for/master/topic
+	To <URL/of/upstream.git>
+	     HEAD:refs/for/master/topic    <OID-A>..<OID-B>
+	Done
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (report with multiple rewrites, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/a/b/c/topic" \
+		-r "ok refs/for/next/topic" \
+		-r "option refname refs/pull/123/head" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/124/head" \
+		-r "option old-oid $B" \
+		-r "option forced-update" \
+		-r "option new-oid $A"
+
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/next/topic(A)  refs/for/a/b/c/topic(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report with multiple rewrites ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/next/topic \
+		HEAD:refs/for/a/b/c/topic \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/topic
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/a/b/c/topic
+	remote: proc-receive> ok refs/for/next/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/124/head
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: proc-receive> option forced-update
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/pull/123/head
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/topic
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/pull/124/head
+	To <URL/of/upstream.git>
+	*    HEAD:refs/pull/123/head    [new reference]
+	*    HEAD:refs/for/a/b/c/topic    [new reference]
+	+    HEAD:refs/pull/124/head    <OID-B>...<OID-A> (forced update)
+	Done
+	EOF
+	test_cmp expect actual &&
+
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0034-report-ft.sh

@@ -0,0 +1,44 @@
+test_expect_success "setup proc-receive hook (ft, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option fall-through"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(B)
+test_expect_success "proc-receive: fall throught, let receive-pack to execute ($PROTOCOL)" '
+	git -C workbench push origin \
+		$B:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-B> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-B> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option fall-through
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-B> refs/for/master/topic
+	To <URL/of/upstream.git>
+	 * [new reference] <COMMIT-B> -> refs/for/master/topic
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/for/master/topic
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             refs/for/master/topic(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL)" '
+	git -C "$upstream" update-ref -d refs/for/master/topic
+'

t/t5411/test-0035-report-ft--porcelain.sh

@@ -0,0 +1,45 @@
+test_expect_success "setup proc-receive hook (fall-through, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option fall-through"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(B)
+test_expect_success "proc-receive: fall throught, let receive-pack to execute ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		$B:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-B> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-B> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option fall-through
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-B> refs/for/master/topic
+	To <URL/of/upstream.git>
+	*    <COMMIT-B>:refs/for/master/topic    [new reference]
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/for/master/topic
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             refs/for/master/topic(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	git -C "$upstream" update-ref -d refs/for/master/topic
+'

t/t5411/test-0036-report-multi-rewrite-for-one-ref.sh

@@ -0,0 +1,227 @@
+test_expect_success "setup git config for remote-tracking of special refs" '
+	(
+		cd workbench &&
+		if ! git config --get-all remote.origin.fetch | grep refs/for/
+		then
+			git config --add remote.origin.fetch \
+				"+refs/for/*:refs/t/for/*" &&
+			git config --add remote.origin.fetch \
+				"+refs/pull/*:refs/t/pull/*" &&
+			git config --add remote.origin.fetch \
+				"+refs/changes/*:refs/t/changes/*"
+		fi
+	)
+'
+
+test_expect_success "setup proc-receive hook (multiple rewrites for one ref, no refname for the 1st rewrite, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/24/124/1" \
+		-r "option old-oid $ZERO_OID" \
+		-r "option new-oid $A" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/25/125/1" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: multiple rewrite for one ref, no refname for the 1st rewrite ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/24/124/1
+	remote: proc-receive> option old-oid <ZERO-OID>
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/25/125/1
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/for/master/topic
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/changes/24/124/1
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/changes/25/125/1
+	To <URL/of/upstream.git>
+	 <OID-A>..<OID-B> HEAD -> refs/for/master/topic
+	 * [new reference] HEAD -> refs/changes/24/124/1
+	 <OID-A>..<OID-B> HEAD -> refs/changes/25/125/1
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "proc-receive: check remote-tracking #1 ($PROTOCOL)" '
+	git -C workbench show-ref |
+		grep -v -e refs/remotes -e refs/heads -e refs/tags >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/t/changes/24/124/1
+	<COMMIT-B> refs/t/changes/25/125/1
+	<COMMIT-B> refs/t/for/master/topic
+	EOF
+	test_cmp expect actual &&
+	git -C workbench update-ref -d refs/t/for/master/topic &&
+	git -C workbench update-ref -d refs/t/changes/24/124/1 &&
+	git -C workbench update-ref -d refs/t/changes/25/125/1
+'
+
+test_expect_success "setup proc-receive hook (multiple rewrites for one ref, no refname for the 2nd rewrite, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/24/124/1" \
+		-r "option old-oid $ZERO_OID" \
+		-r "option new-oid $A" \
+		-r "ok refs/for/master/topic" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/25/125/1" \
+		-r "option old-oid $B" \
+		-r "option new-oid $A" \
+		-r "option forced-update"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: multiple rewrites for one ref, no refname for the 2nd rewrite ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/24/124/1
+	remote: proc-receive> option old-oid <ZERO-OID>
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/25/125/1
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: proc-receive> option forced-update
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/changes/24/124/1
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/for/master/topic
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/changes/25/125/1
+	To <URL/of/upstream.git>
+	 * [new reference] HEAD -> refs/changes/24/124/1
+	 <OID-A>..<OID-B> HEAD -> refs/for/master/topic
+	 + <OID-B>...<OID-A> HEAD -> refs/changes/25/125/1 (forced update)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "proc-receive: check remote-tracking #2 ($PROTOCOL)" '
+	git -C workbench show-ref |
+		grep -v -e refs/remotes -e refs/heads -e refs/tags >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/t/changes/24/124/1
+	<COMMIT-A> refs/t/changes/25/125/1
+	<COMMIT-B> refs/t/for/master/topic
+	EOF
+	test_cmp expect actual &&
+	git -C workbench update-ref -d refs/t/for/master/topic &&
+	git -C workbench update-ref -d refs/t/changes/24/124/1 &&
+	git -C workbench update-ref -d refs/t/changes/25/125/1
+'
+
+test_expect_success "setup proc-receive hook (multiple rewrites for one ref, $PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/23/123/1" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/24/124/2" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: multiple rewrites for one ref ($PROTOCOL)" '
+	git -C workbench push origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/23/123/1
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/24/124/2
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/changes/23/123/1
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/changes/24/124/2
+	To <URL/of/upstream.git>
+	 * [new reference] HEAD -> refs/changes/23/123/1
+	 <OID-A>..<OID-B> HEAD -> refs/changes/24/124/2
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "proc-receive: check remote-tracking #3 ($PROTOCOL)" '
+	git -C workbench show-ref |
+		grep -v -e refs/remotes -e refs/heads -e refs/tags >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/t/changes/23/123/1
+	<COMMIT-B> refs/t/changes/24/124/2
+	EOF
+	test_cmp expect actual &&
+	git -C workbench update-ref -d refs/t/changes/24/124/1 &&
+	git -C workbench update-ref -d refs/t/changes/25/125/2
+'

t/t5411/test-0037-report-multi-rewrite-for-one-ref--porcelain.sh

@@ -0,0 +1,172 @@
+test_expect_success "setup proc-receive hook (multiple rewrites for one ref, no refname for the 1st rewrite, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/24/124/1" \
+		-r "option old-oid $ZERO_OID" \
+		-r "option new-oid $A" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/25/125/1" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: multiple rewrite for one ref, no refname for the 1st rewrite ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/24/124/1
+	remote: proc-receive> option old-oid <ZERO-OID>
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/25/125/1
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/for/master/topic
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/changes/24/124/1
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/changes/25/125/1
+	To <URL/of/upstream.git>
+	     HEAD:refs/for/master/topic    <OID-A>..<OID-B>
+	*    HEAD:refs/changes/24/124/1    [new reference]
+	     HEAD:refs/changes/25/125/1    <OID-A>..<OID-B>
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (multiple rewrites for one ref, no refname for the 2nd rewrite, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/24/124/1" \
+		-r "option old-oid $ZERO_OID" \
+		-r "option new-oid $A" \
+		-r "ok refs/for/master/topic" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/25/125/1" \
+		-r "option old-oid $B" \
+		-r "option new-oid $A" \
+		-r "option forced-update"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: multiple rewrites for one ref, no refname for the 2nd rewrite ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/24/124/1
+	remote: proc-receive> option old-oid <ZERO-OID>
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/25/125/1
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: proc-receive> option forced-update
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/changes/24/124/1
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/for/master/topic
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/changes/25/125/1
+	To <URL/of/upstream.git>
+	*    HEAD:refs/changes/24/124/1    [new reference]
+	     HEAD:refs/for/master/topic    <OID-A>..<OID-B>
+	+    HEAD:refs/changes/25/125/1    <OID-B>...<OID-A> (forced update)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook (multiple rewrites for one ref, $PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/23/123/1" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/changes/24/124/2" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         :                       refs/for/master/topic(A)
+test_expect_success "proc-receive: multiple rewrites for one ref ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain origin \
+		HEAD:refs/for/master/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/23/123/1
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/changes/24/124/2
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/changes/23/123/1
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/changes/24/124/2
+	To <URL/of/upstream.git>
+	*    HEAD:refs/changes/23/123/1    [new reference]
+	     HEAD:refs/changes/24/124/2    <OID-A>..<OID-B>
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'

t/t5411/test-0038-report-mixed-refs.sh

@@ -0,0 +1,89 @@
+test_expect_success "setup proc-receive hook ($PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/next/topic2" \
+		-r "ng refs/for/next/topic1 fail to call Web API" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/for/master/topic" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         : (B)                   bar(A)  baz(A)  refs/for/next/topic(A)  foo(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report update of mixed refs ($PROTOCOL)" '
+	test_must_fail git -C workbench push origin \
+		$B:refs/heads/master \
+		HEAD:refs/heads/bar \
+		HEAD:refs/heads/baz \
+		HEAD:refs/for/next/topic2 \
+		HEAD:refs/for/next/topic1 \
+		HEAD:refs/heads/foo \
+		HEAD:refs/for/master/topic \
+		HEAD:refs/for/next/topic3 \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/bar
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/baz
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic2
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic1
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/foo
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic3
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic2
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic1
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic3
+	remote: proc-receive> ok refs/for/next/topic2
+	remote: proc-receive> ng refs/for/next/topic1 fail to call Web API
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/bar
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/baz
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic2
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/foo
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/for/master/topic
+	To <URL/of/upstream.git>
+	 <OID-A>..<OID-B> <COMMIT-B> -> master
+	 * [new branch] HEAD -> bar
+	 * [new branch] HEAD -> baz
+	 * [new reference] HEAD -> refs/for/next/topic2
+	 * [new branch] HEAD -> foo
+	 <OID-A>..<OID-B> HEAD -> refs/for/master/topic
+	 ! [remote rejected] HEAD -> refs/for/next/topic1 (fail to call Web API)
+	 ! [remote rejected] HEAD -> refs/for/next/topic3 (proc-receive failed to report status)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/bar
+	<COMMIT-A> refs/heads/baz
+	<COMMIT-A> refs/heads/foo
+	<COMMIT-B> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)             foo(A)  bar(A))  baz(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL)" '
+	(
+		cd "$upstream" &&
+		git update-ref refs/heads/master $A &&
+		git update-ref -d refs/heads/foo &&
+		git update-ref -d refs/heads/bar &&
+		git update-ref -d refs/heads/baz
+	)
+'

t/t5411/test-0039-report-mixed-refs--porcelain.sh

@@ -0,0 +1,91 @@
+test_expect_success "setup proc-receive hook ($PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/for/next/topic2" \
+		-r "ng refs/for/next/topic1 fail to call Web API" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/for/master/topic" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         : (B)                   bar(A)  baz(A)  refs/for/next/topic(A)  foo(A)  refs/for/master/topic(A)
+test_expect_success "proc-receive: report update of mixed refs ($PROTOCOL/porcelain)" '
+	test_must_fail git -C workbench push --porcelain origin \
+		$B:refs/heads/master \
+		HEAD:refs/heads/bar \
+		HEAD:refs/heads/baz \
+		HEAD:refs/for/next/topic2 \
+		HEAD:refs/for/next/topic1 \
+		HEAD:refs/heads/foo \
+		HEAD:refs/for/master/topic \
+		HEAD:refs/for/next/topic3 \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/bar
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/baz
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic2
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic1
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/foo
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic3
+	remote: # proc-receive hook
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic2
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic1
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic3
+	remote: proc-receive> ok refs/for/next/topic2
+	remote: proc-receive> ng refs/for/next/topic1 fail to call Web API
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/for/master/topic
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/bar
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/baz
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic2
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/heads/foo
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/for/master/topic
+	To <URL/of/upstream.git>
+	     <COMMIT-B>:refs/heads/master    <OID-A>..<OID-B>
+	*    HEAD:refs/heads/bar    [new branch]
+	*    HEAD:refs/heads/baz    [new branch]
+	*    HEAD:refs/for/next/topic2    [new reference]
+	*    HEAD:refs/heads/foo    [new branch]
+	     HEAD:refs/for/master/topic    <OID-A>..<OID-B>
+	!    HEAD:refs/for/next/topic1    [remote rejected] (fail to call Web API)
+	!    HEAD:refs/for/next/topic3    [remote rejected] (proc-receive failed to report status)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/bar
+	<COMMIT-A> refs/heads/baz
+	<COMMIT-A> refs/heads/foo
+	<COMMIT-B> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(B)             foo(A)  bar(A))  baz(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	(
+		cd "$upstream" &&
+		git update-ref refs/heads/master $A &&
+		git update-ref -d refs/heads/foo &&
+		git update-ref -d refs/heads/bar &&
+		git update-ref -d refs/heads/baz
+	)
+
+'

t/t5411/test-0040-process-all-refs.sh

@@ -0,0 +1,113 @@
+test_expect_success "config receive.procReceiveRefs = refs ($PROTOCOL)" '
+	git -C "$upstream" config --unset-all receive.procReceiveRefs &&
+	git -C "$upstream" config --add receive.procReceiveRefs refs
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "setup upstream branches ($PROTOCOL)" '
+	(
+		cd "$upstream" &&
+		git update-ref refs/heads/master $B &&
+		git update-ref refs/heads/foo $A &&
+		git update-ref refs/heads/bar $A &&
+		git update-ref refs/heads/baz $A
+	)
+
+'
+
+test_expect_success "setup proc-receive hook ($PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/heads/master" \
+		-r "option fall-through" \
+		-r "ok refs/heads/foo" \
+		-r "option fall-through" \
+		-r "ok refs/heads/bar" \
+		-r "option fall-through" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/123/head" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B" \
+		-r "ok refs/for/next/topic" \
+		-r "option refname refs/pull/124/head" \
+		-r "option old-oid $B" \
+		-r "option new-oid $A" \
+		-r "option forced-update"
+	EOF
+'
+
+# Refs of upstream : master(B)             foo(A)  bar(A))  baz(A)
+# Refs of workbench: master(A)  tags/v123
+# git push -f      : master(A)             (NULL)  (B)              refs/for/master/topic(A)  refs/for/next/topic(A)
+test_expect_success "proc-receive: process all refs ($PROTOCOL)" '
+	git -C workbench push -f origin \
+		HEAD:refs/heads/master \
+		:refs/heads/foo \
+		$B:refs/heads/bar \
+		HEAD:refs/for/master/topic \
+		HEAD:refs/for/next/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/bar
+	remote: pre-receive< <COMMIT-A> <ZERO-OID> refs/heads/foo
+	remote: pre-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <COMMIT-A> <COMMIT-B> refs/heads/bar
+	remote: proc-receive< <COMMIT-A> <ZERO-OID> refs/heads/foo
+	remote: proc-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	remote: proc-receive> ok refs/heads/master
+	remote: proc-receive> option fall-through
+	remote: proc-receive> ok refs/heads/foo
+	remote: proc-receive> option fall-through
+	remote: proc-receive> ok refs/heads/bar
+	remote: proc-receive> option fall-through
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: proc-receive> ok refs/for/next/topic
+	remote: proc-receive> option refname refs/pull/124/head
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: proc-receive> option forced-update
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/bar
+	remote: post-receive< <COMMIT-A> <ZERO-OID> refs/heads/foo
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/pull/123/head
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/pull/124/head
+	To <URL/of/upstream.git>
+	 <OID-A>..<OID-B> <COMMIT-B> -> bar
+	 - [deleted] foo
+	 + <OID-B>...<OID-A> HEAD -> master (forced update)
+	 <OID-A>..<OID-B> HEAD -> refs/pull/123/head
+	 + <OID-B>...<OID-A> HEAD -> refs/pull/124/head (forced update)
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/bar
+	<COMMIT-A> refs/heads/baz
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             bar(A)  baz(B)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL)" '
+	(
+		cd "$upstream" &&
+		git update-ref -d refs/heads/bar &&
+		git update-ref -d refs/heads/baz
+	)
+'

t/t5411/test-0041-process-all-refs--porcelain.sh

@@ -0,0 +1,114 @@
+test_expect_success "config receive.procReceiveRefs = refs ($PROTOCOL/porcelain)" '
+	git -C "$upstream" config --unset-all receive.procReceiveRefs &&
+	git -C "$upstream" config --add receive.procReceiveRefs refs
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "setup upstream branches ($PROTOCOL/porcelain)" '
+	(
+		cd "$upstream" &&
+		git update-ref refs/heads/master $B &&
+		git update-ref refs/heads/foo $A &&
+		git update-ref refs/heads/bar $A &&
+		git update-ref refs/heads/baz $A
+	)
+
+'
+
+test_expect_success "setup proc-receive hook ($PROTOCOL/porcelain)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/heads/master" \
+		-r "option fall-through" \
+		-r "ok refs/heads/foo" \
+		-r "option fall-through" \
+		-r "ok refs/heads/bar" \
+		-r "option fall-through" \
+		-r "ok refs/for/master/topic" \
+		-r "option refname refs/pull/123/head" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B" \
+		-r "ok refs/for/next/topic" \
+		-r "option refname refs/pull/124/head" \
+		-r "option old-oid $B" \
+		-r "option new-oid $A" \
+		-r "option forced-update"
+	EOF
+'
+
+# Refs of upstream : master(B)             foo(A)  bar(A))  baz(A)
+# Refs of workbench: master(A)  tags/v123
+# git push -f      : master(A)             (NULL)  (B)              refs/for/master/topic(A)  refs/for/next/topic(A)
+test_expect_success "proc-receive: process all refs ($PROTOCOL/porcelain)" '
+	git -C workbench push --porcelain -f origin \
+		HEAD:refs/heads/master \
+		:refs/heads/foo \
+		$B:refs/heads/bar \
+		HEAD:refs/for/master/topic \
+		HEAD:refs/for/next/topic \
+		>out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/bar
+	remote: pre-receive< <COMMIT-A> <ZERO-OID> refs/heads/foo
+	remote: pre-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	remote: # proc-receive hook
+	remote: proc-receive< <COMMIT-A> <COMMIT-B> refs/heads/bar
+	remote: proc-receive< <COMMIT-A> <ZERO-OID> refs/heads/foo
+	remote: proc-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/master/topic
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/for/next/topic
+	remote: proc-receive> ok refs/heads/master
+	remote: proc-receive> option fall-through
+	remote: proc-receive> ok refs/heads/foo
+	remote: proc-receive> option fall-through
+	remote: proc-receive> ok refs/heads/bar
+	remote: proc-receive> option fall-through
+	remote: proc-receive> ok refs/for/master/topic
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: proc-receive> ok refs/for/next/topic
+	remote: proc-receive> option refname refs/pull/124/head
+	remote: proc-receive> option old-oid <COMMIT-B>
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: proc-receive> option forced-update
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/bar
+	remote: post-receive< <COMMIT-A> <ZERO-OID> refs/heads/foo
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/heads/master
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/pull/123/head
+	remote: post-receive< <COMMIT-B> <COMMIT-A> refs/pull/124/head
+	To <URL/of/upstream.git>
+	     <COMMIT-B>:refs/heads/bar    <OID-A>..<OID-B>
+	-    :refs/heads/foo    [deleted]
+	+    HEAD:refs/heads/master    <OID-B>...<OID-A> (forced update)
+	     HEAD:refs/pull/123/head    <OID-A>..<OID-B>
+	+    HEAD:refs/pull/124/head    <OID-B>...<OID-A> (forced update)
+	Done
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-B> refs/heads/bar
+	<COMMIT-A> refs/heads/baz
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)             bar(A)  baz(B)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "cleanup ($PROTOCOL/porcelain)" '
+	(
+		cd "$upstream" &&
+		git update-ref -d refs/heads/bar &&
+		git update-ref -d refs/heads/baz
+	)
+'

t/t5411/test-0050-proc-receive-refs-with-modifiers.sh

@@ -0,0 +1,135 @@
+test_expect_success "config receive.procReceiveRefs with modifiers ($PROTOCOL)" '
+	(
+		cd "$upstream" &&
+		git config --unset-all receive.procReceiveRefs &&
+		git config --add receive.procReceiveRefs m:refs/heads/master &&
+		git config --add receive.procReceiveRefs ad:refs/heads &&
+		git config --add receive.procReceiveRefs "a!:refs/heads"
+	)
+'
+
+test_expect_success "setup proc-receive hook ($PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/heads/master" \
+		-r "option refname refs/pull/123/head" \
+		-r "option old-oid $A" \
+		-r "option new-oid $B" \
+		-r "ok refs/tags/v123 " \
+		-r "option refname refs/pull/124/head"
+	EOF
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+# git push         : master(B)  tags/v123
+test_expect_success "proc-receive: update branch and new tag ($PROTOCOL)" '
+	git -C workbench push origin \
+		$B:refs/heads/master \
+		v123 >out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: pre-receive< <ZERO-OID> <TAG-v123> refs/tags/v123
+	remote: # proc-receive hook
+	remote: proc-receive< <COMMIT-A> <COMMIT-B> refs/heads/master
+	remote: proc-receive< <ZERO-OID> <TAG-v123> refs/tags/v123
+	remote: proc-receive> ok refs/heads/master
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <COMMIT-B>
+	remote: proc-receive> ok refs/tags/v123
+	remote: proc-receive> option refname refs/pull/124/head
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/pull/123/head
+	remote: post-receive< <ZERO-OID> <TAG-v123> refs/pull/124/head
+	To <URL/of/upstream.git>
+	 <OID-A>..<OID-B> <COMMIT-B> -> refs/pull/123/head
+	 * [new reference] v123 -> refs/pull/124/head
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	EOF
+	test_cmp expect actual
+'
+
+# Refs of upstream : master(A)
+# Refs of workbench: master(A)  tags/v123
+test_expect_success "setup upstream: create tags/v123 ($PROTOCOL)" '
+	git -C "$upstream" update-ref refs/heads/topic $A &&
+	git -C "$upstream" update-ref refs/tags/v123 $TAG &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	<COMMIT-A> refs/heads/topic
+	<TAG-v123> refs/tags/v123
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success "setup proc-receive hook ($PROTOCOL)" '
+	write_script "$upstream/hooks/proc-receive" <<-EOF
+	printf >&2 "# proc-receive hook\n"
+	test-tool proc-receive -v \
+		-r "ok refs/heads/master" \
+		-r "option refname refs/pull/123/head" \
+		-r "option old-oid $A" \
+		-r "option new-oid $ZERO_OID" \
+		-r "ok refs/heads/next" \
+		-r "option refname refs/pull/124/head" \
+		-r "option new-oid $A"
+	EOF
+'
+
+# Refs of upstream : master(A)  topic(A)  tags/v123
+# Refs of workbench: master(A)            tags/v123
+# git push         : NULL       topic(B)  NULL       next(A)
+test_expect_success "proc-receive: create/delete branch, and delete tag ($PROTOCOL)" '
+	git -C workbench push origin \
+		:refs/heads/master \
+		$B:refs/heads/topic \
+		$A:refs/heads/next \
+		:refs/tags/v123 >out 2>&1 &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	remote: # pre-receive hook
+	remote: pre-receive< <COMMIT-A> <ZERO-OID> refs/heads/master
+	remote: pre-receive< <COMMIT-A> <COMMIT-B> refs/heads/topic
+	remote: pre-receive< <TAG-v123> <ZERO-OID> refs/tags/v123
+	remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: # proc-receive hook
+	remote: proc-receive< <COMMIT-A> <ZERO-OID> refs/heads/master
+	remote: proc-receive< <ZERO-OID> <COMMIT-A> refs/heads/next
+	remote: proc-receive> ok refs/heads/master
+	remote: proc-receive> option refname refs/pull/123/head
+	remote: proc-receive> option old-oid <COMMIT-A>
+	remote: proc-receive> option new-oid <ZERO-OID>
+	remote: proc-receive> ok refs/heads/next
+	remote: proc-receive> option refname refs/pull/124/head
+	remote: proc-receive> option new-oid <COMMIT-A>
+	remote: # post-receive hook
+	remote: post-receive< <COMMIT-A> <ZERO-OID> refs/pull/123/head
+	remote: post-receive< <COMMIT-A> <COMMIT-B> refs/heads/topic
+	remote: post-receive< <TAG-v123> <ZERO-OID> refs/tags/v123
+	remote: post-receive< <ZERO-OID> <COMMIT-A> refs/pull/124/head
+	To <URL/of/upstream.git>
+	 - [deleted] refs/pull/123/head
+	 <OID-A>..<OID-B> <COMMIT-B> -> topic
+	 - [deleted] v123
+	 * [new reference] <COMMIT-A> -> refs/pull/124/head
+	EOF
+	test_cmp expect actual &&
+	git -C "$upstream" show-ref >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+	cat >expect <<-EOF &&
+	<COMMIT-A> refs/heads/master
+	<COMMIT-B> refs/heads/topic
+	EOF
+	test_cmp expect actual
+'

t/t5516-fetch-push.sh

@@ -1039,7 +1039,7 @@ test_force_fetch_tag "annotated tag" "-f -a -m'tag message'"
 test_expect_success 'push --porcelain' '
 	mk_empty testrepo &&
 	echo >.git/foo  "To testrepo" &&
-	echo >>.git/foo "*	refs/heads/master:refs/remotes/origin/master	[new branch]"  &&
+	echo >>.git/foo "*	refs/heads/master:refs/remotes/origin/master	[new reference]"  &&
 	echo >>.git/foo "Done" &&
 	git push >.git/bar --porcelain  testrepo refs/heads/master:refs/remotes/origin/master &&
 	(

transport-helper.c

@@ -723,13 +723,61 @@ static int fetch(struct transport *transport,
 	return -1;
 }
 
+struct push_update_ref_state {
+	struct ref *hint;
+	struct ref_push_report *report;
+	int new_report;
+};
+
 static int push_update_ref_status(struct strbuf *buf,
-				   struct ref **ref,
+				   struct push_update_ref_state *state,
 				   struct ref *remote_refs)
 {
 	char *refname, *msg;
 	int status, forced = 0;
 
+	if (starts_with(buf->buf, "option ")) {
+		struct object_id old_oid, new_oid;
+		const char *key, *val;
+		char *p;
+
+		if (!state->hint || !(state->report || state->new_report))
+			die(_("'option' without a matching 'ok/error' directive"));
+		if (state->new_report) {
+			if (!state->hint->report) {
+				state->hint->report = xcalloc(1, sizeof(struct ref_push_report));
+				state->report = state->hint->report;
+			} else {
+				state->report = state->hint->report;
+				while (state->report->next)
+					state->report = state->report->next;
+				state->report->next = xcalloc(1, sizeof(struct ref_push_report));
+				state->report = state->report->next;
+			}
+			state->new_report = 0;
+		}
+		key = buf->buf + 7;
+		p = strchr(key, ' ');
+		if (p)
+			*p++ = '\0';
+		val = p;
+		if (!strcmp(key, "refname"))
+			state->report->ref_name = xstrdup_or_null(val);
+		else if (!strcmp(key, "old-oid") && val &&
+			 !parse_oid_hex(val, &old_oid, &val))
+			state->report->old_oid = oiddup(&old_oid);
+		else if (!strcmp(key, "new-oid") && val &&
+			 !parse_oid_hex(val, &new_oid, &val))
+			state->report->new_oid = oiddup(&new_oid);
+		else if (!strcmp(key, "forced-update"))
+			state->report->forced_update = 1;
+		/* Not update remote namespace again. */
+		return 1;
+	}
+
+	state->report = NULL;
+	state->new_report = 0;
+
 	if (starts_with(buf->buf, "ok ")) {
 		status = REF_STATUS_OK;
 		refname = buf->buf + 3;
@@ -785,16 +833,16 @@ static int push_update_ref_status(struct strbuf *buf,
 		}
 	}
 
-	if (*ref)
+	if (state->hint)
-		*ref = find_ref_by_name(*ref, refname);
+		state->hint = find_ref_by_name(state->hint, refname);
-	if (!*ref)
+	if (!state->hint)
-		*ref = find_ref_by_name(remote_refs, refname);
+		state->hint = find_ref_by_name(remote_refs, refname);
-	if (!*ref) {
+	if (!state->hint) {
 		warning(_("helper reported unexpected status of %s"), refname);
 		return 1;
 	}
 
-	if ((*ref)->status != REF_STATUS_NONE) {
+	if (state->hint->status != REF_STATUS_NONE) {
 		/*
 		 * Earlier, the ref was marked not to be pushed, so ignore the ref
 		 * status reported by the remote helper if the latter is 'no match'.
@@ -803,9 +851,11 @@ static int push_update_ref_status(struct strbuf *buf,
 			return 1;
 	}
 
-	(*ref)->status = status;
+	if (status == REF_STATUS_OK)
-	(*ref)->forced_update |= forced;
+		state->new_report = 1;
-	(*ref)->remote_status = msg;
+	state->hint->status = status;
+	state->hint->forced_update |= forced;
+	state->hint->remote_status = msg;
 	return !(status == REF_STATUS_OK);
 }
 
@@ -813,37 +863,57 @@ static int push_update_refs_status(struct helper_data *data,
 				    struct ref *remote_refs,
 				    int flags)
 {
+	struct ref *ref;
+	struct ref_push_report *report;
 	struct strbuf buf = STRBUF_INIT;
-	struct ref *ref = remote_refs;
+	struct push_update_ref_state state = { remote_refs, NULL, 0 };
-	int ret = 0;
 
 	for (;;) {
-		char *private;
-
 		if (recvline(data, &buf)) {
-			ret = 1;
+			strbuf_release(&buf);
-			break;
+			return 1;
 		}
-
 		if (!buf.len)
 			break;
-
+		push_update_ref_status(&buf, &state, remote_refs);
-		if (push_update_ref_status(&buf, &ref, remote_refs))
-			continue;
-
-		if (flags & TRANSPORT_PUSH_DRY_RUN || !data->rs.nr || data->no_private_update)
-			continue;
-
-		/* propagate back the update to the remote namespace */
-		private = apply_refspecs(&data->rs, ref->name);
-		if (!private)
-			continue;
-		update_ref("update by helper", private, &ref->new_oid, NULL,
-			   0, 0);
-		free(private);
 	}
 	strbuf_release(&buf);
-	return ret;
+
+	if (flags & TRANSPORT_PUSH_DRY_RUN || !data->rs.nr || data->no_private_update)
+		return 0;
+
+	/* propagate back the update to the remote namespace */
+	for (ref = remote_refs; ref; ref = ref->next) {
+		char *private;
+
+		if (ref->status != REF_STATUS_OK)
+			continue;
+
+		if (!ref->report) {
+			private = apply_refspecs(&data->rs, ref->name);
+			if (!private)
+				continue;
+			update_ref("update by helper", private, &(ref->new_oid),
+				   NULL, 0, 0);
+			free(private);
+		} else {
+			for (report = ref->report; report; report = report->next) {
+				private = apply_refspecs(&data->rs,
+							 report->ref_name
+							 ? report->ref_name
+							 : ref->name);
+				if (!private)
+					continue;
+				update_ref("update by helper", private,
+					   report->new_oid
+					   ? report->new_oid
+					   : &(ref->new_oid),
+					   NULL, 0, 0);
+				free(private);
+			}
+		}
+	}
+	return 0;
 }
 
 static void set_common_push_options(struct transport *transport,

transport.c

@@ -432,38 +432,67 @@ int transport_refs_pushed(struct ref *ref)
 	return 0;
 }
 
-void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
+static void update_one_tracking_ref(struct remote *remote, char *refname,
+				    struct object_id *new_oid, int deletion,
+				    int verbose)
 {
 	struct refspec_item rs;
 
-	if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
-		return;
-
 	memset(&rs, 0, sizeof(rs));
-	rs.src = ref->name;
+	rs.src = refname;
 	rs.dst = NULL;
 
 	if (!remote_find_tracking(remote, &rs)) {
 		if (verbose)
 			fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
-		if (ref->deletion) {
+		if (deletion)
 			delete_ref(NULL, rs.dst, NULL, 0);
-		} else
+		else
-			update_ref("update by push", rs.dst, &ref->new_oid,
+			update_ref("update by push", rs.dst, new_oid,
 				   NULL, 0, 0);
 		free(rs.dst);
 	}
 }
 
+void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
+{
+	char *refname;
+	struct object_id *new_oid;
+	struct ref_push_report *report;
+
+	if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
+		return;
+
+	report = ref->report;
+	if (!report)
+		update_one_tracking_ref(remote, ref->name, &ref->new_oid,
+					ref->deletion, verbose);
+	else
+		for (; report; report = report->next) {
+			refname = report->ref_name ? (char *)report->ref_name : ref->name;
+			new_oid = report->new_oid ? report->new_oid : &ref->new_oid;
+			update_one_tracking_ref(remote, refname, new_oid,
+						is_null_oid(new_oid), verbose);
+		}
+}
+
 static void print_ref_status(char flag, const char *summary,
 			     struct ref *to, struct ref *from, const char *msg,
+			     struct ref_push_report *report,
 			     int porcelain, int summary_width)
 {
+	const char *to_name;
+
+	if (report && report->ref_name)
+		to_name = report->ref_name;
+	else
+		to_name = to->name;
+
 	if (porcelain) {
 		if (from)
-			fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
+			fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to_name);
 		else
-			fprintf(stdout, "%c\t:%s\t", flag, to->name);
+			fprintf(stdout, "%c\t:%s\t", flag, to_name);
 		if (msg)
 			fprintf(stdout, "%s (%s)\n", summary, msg);
 		else
@@ -477,9 +506,11 @@ static void print_ref_status(char flag, const char *summary,
 		fprintf(stderr, " %s%c %-*s%s ", red, flag, summary_width,
 			summary, reset);
 		if (from)
-			fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
+			fprintf(stderr, "%s -> %s",
+				prettify_refname(from->name),
+				prettify_refname(to_name));
 		else
-			fputs(prettify_refname(to->name), stderr);
+			fputs(prettify_refname(to_name), stderr);
 		if (msg) {
 			fputs(" (", stderr);
 			fputs(msg, stderr);
@@ -489,24 +520,52 @@ static void print_ref_status(char flag, const char *summary,
 	}
 }
 
-static void print_ok_ref_status(struct ref *ref, int porcelain, int summary_width)
+static void print_ok_ref_status(struct ref *ref,
+				struct ref_push_report *report,
+				int porcelain, int summary_width)
 {
+	struct object_id *old_oid;
+	struct object_id *new_oid;
+	const char *ref_name;
+	int forced_update;
+
+	if (report && report->old_oid)
+		old_oid = report->old_oid;
+	else
+		old_oid = &ref->old_oid;
+	if (report && report->new_oid)
+		new_oid = report->new_oid;
+	else
+		new_oid = &ref->new_oid;
+	if (report && report->forced_update)
+		forced_update = report->forced_update;
+	else
+		forced_update = ref->forced_update;
+	if (report && report->ref_name)
+		ref_name = report->ref_name;
+	else
+		ref_name = ref->name;
+
 	if (ref->deletion)
 		print_ref_status('-', "[deleted]", ref, NULL, NULL,
-				 porcelain, summary_width);
+				 report, porcelain, summary_width);
-	else if (is_null_oid(&ref->old_oid))
+	else if (is_null_oid(old_oid))
 		print_ref_status('*',
-			(starts_with(ref->name, "refs/tags/") ? "[new tag]" :
+				 (starts_with(ref_name, "refs/tags/")
-			"[new branch]"),
+				  ? "[new tag]"
-			ref, ref->peer_ref, NULL, porcelain, summary_width);
+				  : (starts_with(ref_name, "refs/heads/")
+				     ? "[new branch]"
+				     : "[new reference]")),
+				 ref, ref->peer_ref, NULL,
+				 report, porcelain, summary_width);
 	else {
 		struct strbuf quickref = STRBUF_INIT;
 		char type;
 		const char *msg;
 
-		strbuf_add_unique_abbrev(&quickref, &ref->old_oid,
+		strbuf_add_unique_abbrev(&quickref, old_oid,
 					 DEFAULT_ABBREV);
-		if (ref->forced_update) {
+		if (forced_update) {
 			strbuf_addstr(&quickref, "...");
 			type = '+';
 			msg = "forced update";
@@ -515,16 +574,17 @@ static void print_ok_ref_status(struct ref *ref, int porcelain, int summary_widt
 			type = ' ';
 			msg = NULL;
 		}
-		strbuf_add_unique_abbrev(&quickref, &ref->new_oid,
+		strbuf_add_unique_abbrev(&quickref, new_oid,
 					 DEFAULT_ABBREV);
 
 		print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
-				 porcelain, summary_width);
+				 report, porcelain, summary_width);
 		strbuf_release(&quickref);
 	}
 }
 
-static int print_one_push_status(struct ref *ref, const char *dest, int count,
+static int print_one_push_report(struct ref *ref, const char *dest, int count,
+				 struct ref_push_report *report,
 				 int porcelain, int summary_width)
 {
 	if (!count) {
@@ -536,65 +596,89 @@ static int print_one_push_status(struct ref *ref, const char *dest, int count,
 	switch(ref->status) {
 	case REF_STATUS_NONE:
 		print_ref_status('X', "[no match]", ref, NULL, NULL,
-				 porcelain, summary_width);
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_REJECT_NODELETE:
 		print_ref_status('!', "[rejected]", ref, NULL,
 				 "remote does not support deleting refs",
-				 porcelain, summary_width);
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_UPTODATE:
 		print_ref_status('=', "[up to date]", ref,
-				 ref->peer_ref, NULL, porcelain, summary_width);
+				 ref->peer_ref, NULL,
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_REJECT_NONFASTFORWARD:
 		print_ref_status('!', "[rejected]", ref, ref->peer_ref,
-				 "non-fast-forward", porcelain, summary_width);
+				 "non-fast-forward",
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_REJECT_ALREADY_EXISTS:
 		print_ref_status('!', "[rejected]", ref, ref->peer_ref,
-				 "already exists", porcelain, summary_width);
+				 "already exists",
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_REJECT_FETCH_FIRST:
 		print_ref_status('!', "[rejected]", ref, ref->peer_ref,
-				 "fetch first", porcelain, summary_width);
+				 "fetch first",
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_REJECT_NEEDS_FORCE:
 		print_ref_status('!', "[rejected]", ref, ref->peer_ref,
-				 "needs force", porcelain, summary_width);
+				 "needs force",
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_REJECT_STALE:
 		print_ref_status('!', "[rejected]", ref, ref->peer_ref,
-				 "stale info", porcelain, summary_width);
+				 "stale info",
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_REJECT_SHALLOW:
 		print_ref_status('!', "[rejected]", ref, ref->peer_ref,
 				 "new shallow roots not allowed",
-				 porcelain, summary_width);
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_REMOTE_REJECT:
 		print_ref_status('!', "[remote rejected]", ref,
 				 ref->deletion ? NULL : ref->peer_ref,
-				 ref->remote_status, porcelain, summary_width);
+				 ref->remote_status,
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_EXPECTING_REPORT:
 		print_ref_status('!', "[remote failure]", ref,
 				 ref->deletion ? NULL : ref->peer_ref,
 				 "remote failed to report status",
-				 porcelain, summary_width);
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_ATOMIC_PUSH_FAILED:
 		print_ref_status('!', "[rejected]", ref, ref->peer_ref,
-				 "atomic push failed", porcelain, summary_width);
+				 "atomic push failed",
+				 report, porcelain, summary_width);
 		break;
 	case REF_STATUS_OK:
-		print_ok_ref_status(ref, porcelain, summary_width);
+		print_ok_ref_status(ref, report, porcelain, summary_width);
 		break;
 	}
 
 	return 1;
 }
 
+static int print_one_push_status(struct ref *ref, const char *dest, int count,
+				 int porcelain, int summary_width)
+{
+	struct ref_push_report *report;
+	int n = 0;
+
+	if (!ref->report)
+		return print_one_push_report(ref, dest, count,
+					     NULL, porcelain, summary_width);
+
+	for (report = ref->report; report; report = report->next)
+		print_one_push_report(ref, dest, count + n++,
+				      report, porcelain, summary_width);
+	return n;
+}
+
 static int measure_abbrev(const struct object_id *oid, int sofar)
 {
 	char hex[GIT_MAX_HEXSZ + 1];