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

On 8/12/10 3:22 PM, Brian Foster wrote:

On Thursday 12 August 2010 14:32:41 Tomas Carnecky wrote:

quoted

                                                        When you use
'git update-ref --no-deref HEAD v2' it will modify HEAD

 NO, it gets an error (following is from a modified version
 of my previously-posted script):
+ git update-ref --no-deref HEAD v2          
error: Trying to write non-commit object 2bc324e6a68cb3704448c9f63ddc3bc0260c0b48 to branch HEAD                                                                                

Oh the subtleties when working with plumbing:
git update-ref --no-deref HEAD v2^{commit}

 Using ‘git update-ref --no-deref HEAD FETCH_HEAD’ does
 not error, and, as you say (below), does seem to give
 me a detached head.

quoted

'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).

 I do_not_ want a detached head!  This has perhaps been
 confused by my improperly saying “update HEAD” when I
 meant “update the master branch”.  If you look back at
 my originally-posted diagrams, it's a reasonable guess
 I don't want a detached head.  Having HEAD continue to
 be a symref to refs/heads/master (which, in this case,
 is the same commit as v2) is correct.

Just make sure your tools and scripts don't break when you reset the
branch like that (especially when the update is non-fast forward as
fetch+reset won't warn you when this happens).

tom