diff --git a/Documentation/config/core.txt b/Documentation/config/core.txt
index 87e4c04836..3ea3124f7f 100644
--- a/Documentation/config/core.txt
+++ b/Documentation/config/core.txt
@@ -468,8 +468,8 @@ usage, at the slight expense of increased disk usage.
 * Will generally be streamed when written, which avoids excessive
 memory usage, at the cost of some fixed overhead. Commands that make
 use of this include linkgit:git-archive[1],
-linkgit:git-fast-import[1], linkgit:git-index-pack[1] and
-linkgit:git-fsck[1].
+linkgit:git-fast-import[1], linkgit:git-index-pack[1],
+linkgit:git-unpack-objects[1] and linkgit:git-fsck[1].
 
 core.excludesFile::
 	Specifies the pathname to the file that contains patterns to
diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c
index 32e8b47059..43789b8ef2 100644
--- a/builtin/unpack-objects.c
+++ b/builtin/unpack-objects.c
@@ -351,6 +351,68 @@ static void unpack_non_delta_entry(enum object_type type, unsigned long size,
 		write_object(nr, type, buf, size);
 }
 
+struct input_zstream_data {
+	git_zstream *zstream;
+	unsigned char buf[8192];
+	int status;
+};
+
+static const void *feed_input_zstream(struct input_stream *in_stream,
+				      unsigned long *readlen)
+{
+	struct input_zstream_data *data = in_stream->data;
+	git_zstream *zstream = data->zstream;
+	void *in = fill(1);
+
+	if (in_stream->is_finished) {
+		*readlen = 0;
+		return NULL;
+	}
+
+	zstream->next_out = data->buf;
+	zstream->avail_out = sizeof(data->buf);
+	zstream->next_in = in;
+	zstream->avail_in = len;
+
+	data->status = git_inflate(zstream, 0);
+
+	in_stream->is_finished = data->status != Z_OK;
+	use(len - zstream->avail_in);
+	*readlen = sizeof(data->buf) - zstream->avail_out;
+
+	return data->buf;
+}
+
+static void stream_blob(unsigned long size, unsigned nr)
+{
+	git_zstream zstream = { 0 };
+	struct input_zstream_data data = { 0 };
+	struct input_stream in_stream = {
+		.read = feed_input_zstream,
+		.data = &data,
+	};
+	struct obj_info *info = &obj_list[nr];
+
+	data.zstream = &zstream;
+	git_inflate_init(&zstream);
+
+	if (stream_loose_object(&in_stream, size, &info->oid))
+		die(_("failed to write object in stream"));
+
+	if (data.status != Z_STREAM_END)
+		die(_("inflate returned (%d)"), data.status);
+	git_inflate_end(&zstream);
+
+	if (strict) {
+		struct blob *blob = lookup_blob(the_repository, &info->oid);
+
+		if (!blob)
+			die(_("invalid blob object from stream"));
+		blob->object.flags |= FLAG_WRITTEN;
+	}
+	info->obj = NULL;
+}
+
 static int resolve_against_held(unsigned nr, const struct object_id *base,
 				void *delta_data, unsigned long delta_size)
 {
@@ -483,9 +545,14 @@ static void unpack_one(unsigned nr)
 	}
 
 	switch (type) {
+	case OBJ_BLOB:
+		if (!dry_run && size > big_file_threshold) {
+			stream_blob(size, nr);
+			return;
+		}
+		/* fallthrough */
 	case OBJ_COMMIT:
 	case OBJ_TREE:
-	case OBJ_BLOB:
 	case OBJ_TAG:
 		unpack_non_delta_entry(type, size, nr);
 		return;
diff --git a/t/t5351-unpack-large-objects.sh b/t/t5351-unpack-large-objects.sh
index 8d84313221..8ce8aa3b14 100755
--- a/t/t5351-unpack-large-objects.sh
+++ b/t/t5351-unpack-large-objects.sh
@@ -9,7 +9,8 @@ test_description='git unpack-objects with large objects'
 
 prepare_dest () {
 	test_when_finished "rm -rf dest.git" &&
-	git init --bare dest.git
+	git init --bare dest.git &&
+	git -C dest.git config core.bigFileThreshold "$1"
 }
 
 test_expect_success "create large objects (1.5 MB) and PACK" '
@@ -17,7 +18,10 @@ test_expect_success "create large objects (1.5 MB) and PACK" '
 	test_commit --append foo big-blob &&
 	test-tool genrandom bar 1500000 >big-blob &&
 	test_commit --append bar big-blob &&
-	PACK=$(echo HEAD | git pack-objects --revs pack)
+	PACK=$(echo HEAD | git pack-objects --revs pack) &&
+	git verify-pack -v pack-$PACK.pack >out &&
+	sed -n -e "s/^\([0-9a-f][0-9a-f]*\).*\(commit\|tree\|blob\).*/\1/p" \
+		<out >obj-list
 '
 
 test_expect_success 'set memory limitation to 1MB' '
@@ -26,16 +30,47 @@ test_expect_success 'set memory limitation to 1MB' '
 '
 
 test_expect_success 'unpack-objects failed under memory limitation' '
-	prepare_dest &&
+	prepare_dest 2m &&
 	test_must_fail git -C dest.git unpack-objects <pack-$PACK.pack 2>err &&
 	grep "fatal: attempting to allocate" err
 '
 
 test_expect_success 'unpack-objects works with memory limitation in dry-run mode' '
-	prepare_dest &&
+	prepare_dest 2m &&
 	git -C dest.git unpack-objects -n <pack-$PACK.pack &&
 	test_stdout_line_count = 0 find dest.git/objects -type f &&
 	test_dir_is_empty dest.git/objects/pack
 '
 
+test_expect_success 'unpack big object in stream' '
+	prepare_dest 1m &&
+	git -C dest.git unpack-objects <pack-$PACK.pack &&
+	test_dir_is_empty dest.git/objects/pack
+'
+
+BATCH_CONFIGURATION='-c core.fsync=loose-object -c core.fsyncmethod=batch'
+
+test_expect_success 'unpack big object in stream (core.fsyncmethod=batch)' '
+	prepare_dest 1m &&
+	GIT_TRACE2_EVENT="$(pwd)/trace2.txt" \
+		git -C dest.git $BATCH_CONFIGURATION unpack-objects <pack-$PACK.pack &&
+	grep fsync/hardware-flush trace2.txt &&
+	test_dir_is_empty dest.git/objects/pack &&
+	git -C dest.git cat-file --batch-check="%(objectname)" <obj-list >current &&
+	cmp obj-list current
+'
+
+test_expect_success 'do not unpack existing large objects' '
+	prepare_dest 1m &&
+	git -C dest.git index-pack --stdin <pack-$PACK.pack &&
+	git -C dest.git unpack-objects <pack-$PACK.pack &&
+
+	# The destination came up with the exact same pack...
+	DEST_PACK=$(echo dest.git/objects/pack/pack-*.pack) &&
+	test_cmp pack-$PACK.pack $DEST_PACK &&
+
+	# ...and wrote no loose objects
+	test_stdout_line_count = 0 find dest.git/objects -type f ! -name "pack-*"
+'
+
 test_done