From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 23 Apr 2014 18:15:01 GMT
Subject: Re: Archiving off old branches
Message-ID: <xmqqvbtzzzdm.fsf@gitster.dls.corp.google.com>
In-Reply-To: <20140423175820.GE15516@google.com>

Jonathan Nieder <jrnieder@gmail.com> writes:

> Tim Chase wrote:
>
>>   cd .git/refs
>>   mkdir -p closed
>>   mv heads/BUG-123 closed
>
> That breaks with packed refs (see git-pack-refs(1)), which are a normal
> thing to encounter after garbage collection.

Specifically,

 - if BUG-123 branch was placed in packed-refs file in the past
   (which may be older than what you have right now at heads/BUG-123
   as a loose ref), the above procedure will still make it appear in
   your "git branch --list" output, pointing at a possibly old
   commit that may even have been pruned away.

 - if BUG-123 branch was placed in packed-refs file and you haven't
   touched that branch since then, heads/BUG-123 file would not
   exist, "mv" will fail, and you won't see closed/BUG-123 at the
   end of the procedure.