Re: [SOLVED] `git fetch tag NAME' into mirror repo does not update HEAD, what to do?

From: Tomas Carnecky <tom@dbservice.com>
Date: Aug 12, 2010, 12:32 UTC
Message-ID: <4C63E9E9.7070105@dbservice.com>
In-Reply-To: <201008121416.35887.brian.foster@innova-card.com>

On 8/12/10 2:16 PM, Brian Foster wrote:

Show 11 quoted lines

>  NO.  ‘get checkout ...’ does not work in a bare repository.
>  (You can modify my trivial posted script to prove this.)
> 
>  However, your comment got me to thinking.  This _does_ work:
> 
>     git reset --soft FETCH_HEAD
> 
>  (And, I presume without testing, so would ‘... v2’ ?)
>  Given that git-reset(1)'s purpose is to change the branch's
>  head (or to change HEAD as I've been incorrectly describing
>  it), that does make sense.

I expected git checkout to work even in a bare repo - as you can see I don't work that often inside bare repos :).

You should use update-ref instead of reset. The problem with reset is that it changes the branch and not HEAD. Say initially your mirror had HEAD as symref pointing to refs/heads/master. When you run reset --soft v2 your master branch will now point to the same commit as the tag v2 (and HEAD will be still pointing to refs/heads/master). When you use 'git update-ref --no-deref HEAD v2' it will modify HEAD directly and have it point directly to the same commit as v2 (also called detached HEAD).

tom