Re: [PATCH] git fetch one tag only

On Wed, Jun 6, 2012 at 9:37 PM, Junio C Hamano [off-list ref] wrote:

On Wed, Jun 6, 2012 at 6:40 PM, cheng renquan [off-list ref] wrote:

quoted

Someone maybe like me is working in the way of following one central
git repository
while sometimes need to fetch some code or tags from a 3rd git repo,
but unfortunately the 3rd repo may contain a lot of tags not all I want
to fetch to mess up my local repo, at this time I want to fetch only one tag
from the 3rd repo, but the syntax of
 `git fetch 3rd-repo the-tag-name`

really fetched the code of the-tag-name from 3rd-repo, but forgot the
tag itself;

The subject of "forgot" in that sentence is you, not "git fetch".
You told "git fetch" to grab it but not store it locally in your
refs/tags namespace.

There is a convenience short-hand "tag <tagname>", i.e.

  git fetch 3rd-repo tag the-tag-name

that is equivalent to

  git fetch 3rd-repo refs/tags/the-tag-name:refs/tags/the-tag-name

So I do not think your patch is necessary for your use case, and
obviously it will
break other people's use case where they just want to fetch (and inspect what is
left in FETCH_HEAD) but do not want to store.

No, I tried what you said but it doesn't work as expected:

  git fetch linux-stable tag v3.4.1

My [linus-git] is following torvalds' tree and now I want to fetch
just one tag v3.4.1 from
linux-stable tree, but the above command would fetch all tags from linux-stable

linus-git	git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
(fetch)
linux-stable	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
(fetch)


[linus-git] $ git fetch -v --dry-run linux-stable tag v3.4.1 |& head
From git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable
 = [up to date]      v3.4.1     -> v3.4.1
 * [new tag]         latest     -> latest
 * [new tag]         v2.6.12.1  -> v2.6.12.1
 * [new tag]         v2.6.12.2  -> v2.6.12.2
[...]


I didn't know this syntax before, but Yes, this syntax should serve
the one-tag-only goal better,
  `git fetch 3rd-repo tag the-tag-name`
maybe I'd better to fix that?