fetch doc: update introductory part for clarity

- "Branches" is a more common way to say "heads" in these days.

 - Remote-tracking branches are used a lot more these days and it is
   worth mentioning that it is one of the primary side effects of
   the command to update them.

 - Avoid "X. That means Y."  If Y is easier to understand to
   readers, just say that upfront.

 - Use of explicit refspec to fetch tags does not have much to do
   with turning "auto following" on or off.  It is a way to fetch
   tags that otherwise would not be fetched by auto-following.

Helped-by: Marc Branchaud <marcnarc@xiplink.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2014-05-29 12:36:47 -07:00
parent e156455ea4
commit 532845604d

View File

@ -17,20 +17,22 @@ SYNOPSIS
DESCRIPTION
-----------
Fetches named heads or tags from one or more other repositories,
along with the objects necessary to complete them.
Fetch branches and/or tags (collectively, "refs") from one or more
other repositories, along with the objects necessary to complete
their histories.
The ref names and their object names of fetched refs are stored
in `.git/FETCH_HEAD`. This information is left for a later merge
operation done by 'git merge'.
The names of refs that are fetched, together with the object names
they point at, are written to `.git/FETCH_HEAD`. This information
can be used to learn what was fetched. In addition, the remote-tracking
branches are updated (see description on <refspec> below for details).
By default, tags are auto-followed. This means that when fetching
from a remote, any tags on the remote that point to objects that exist
in the local repository are fetched. The effect is to fetch tags that
By default, any tag that points into the histories being fetched is
also fetched; the effect is to fetch tags that
point at branches that you are interested in. This default behavior
can be changed by using the --tags or --no-tags options, by
configuring remote.<name>.tagopt, or by using a refspec that fetches
tags explicitly.
can be changed by using the --tags or --no-tags options or by
configuring remote.<name>.tagopt. By using a refspec that fetches tags
explicitly, you can fetch tags that do not point into branches you
are interested in as well.
'git fetch' can fetch from either a single named repository,
or from several repositories at once if <group> is given and