Re: git object-count differs between clones

[Andrew Martin <amartin@xes-inc.com>]

----- Original Message -----
> From: "Jeff King" <peff@peff.net>
> To: "Andrew Martin" <amartin@xes-inc.com>
> Cc: "Matthieu Moy" <Matthieu.Moy@grenoble-inp.fr>, git@vger.kernel.org
> Sent: Tuesday, February 2, 2016 10:34:12 PM
> Subject: Re: git object-count differs between clones
> 
> On Tue, Feb 02, 2016 at 11:22:08AM -0600, Andrew Martin wrote:
> 
> > Thanks for the clarification. I now ran "git repack -A" followed by
> > "git gc --prune=now", however I am still seeing the same number of objects.
> > What
> > else can I try to successfully mark these and unreachable and garbage
> > collect them?
> 
> That should clear out any unreachable objects. Are we sure that the
> objects in question are, in fact, unreachable?
> 
> Try:
> 
>   git rev-list --objects --all --reflog | wc -l
> 
> which should give a count of reachable objects. I'd expect that to line
> up with that "git count-objects -v" reports after having run your gc
> above.
> 
> In your original email, the discrepancy was between your "original"
> repository and the one that had round-tripped to a clone. Is it possible
> there are refs in the original that did not get pushed? Try comparing
> "git for-each-ref" in each repository.
> 
> We also consider objects in the index to be reachable for packing. Could
> your original perhaps have some uncommitted objects mentioned in the
> index?
> 
> -Peff
> 

Jeff,

This did it - those commits were still referenced by some remotes:
$ git for-each-ref
945c3a60dfb4d9ab774708d19f7aa74dd545db90 commit refs/heads/master
945c3a60dfb4d9ab774708d19f7aa74dd545db90 commit refs/remotes/origin/brancha
8b331e4bb42f6291c33eb0847c4481407e3d753c commit refs/remotes/origin/branchb

I removed them:
$ git update-ref -d refs/remotes/origin/brancha
$ git update-ref -d refs/remotes/origin/branchb

And then I was able to garbage collect and get the expected object count:
$ git reflog expire --expire=now --expire-unreachable=now --all
$ git gc --prune=now

Thanks for the help!

Andrew