RE: I have gone and done a bad thing - malformed tree objects

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> From: Jeff King
> Sent: Friday, July 31, 2020 7:15 PM
> 
> On Fri, Jul 31, 2020 at 07:05:42PM -0400, Jason Pyeron wrote:
> 
> > > If the cruft has already been stored in a packfile, then prune would
> > > not touch it.  "git repack -a -d && git prune --expire=now" would be
> > > the next thing to do.
> >
> > $ git repack -a -d && git prune --expire=now
> > Enumerating objects: 327236, done.
> > Counting objects: 100% (327125/327125), done.
> > Delta compression using up to 8 threads
> > Compressing objects: 100% (104728/104728), done.
> > Writing objects: 100% (327125/327125), done.
> > Total 327125 (delta 205244), reused 326116 (delta 204678), pack-reused 0
> >
> > $ git cat-file --batch-all-objects --batch=objecttype
> > fatal: object 00009623a06b8dea7c151542fc789539599c07d0 changed type!?
> 
> That should be dropping everything that isn't reachable. I'd suggest to
> expire reflogs, though it looks like you've also tried "git gc" with
> reflog expiration. Does removing .git/logs entirely help?
> 
> If not, are you sure it isn't actually reachable from your history? What
> does:
> 
>   git rev-list --all --objects | grep 00009623a06

$ git rev-list --all --objects | grep 00009623a06
00009623a06b8dea7c151542fc789539599c07d0 src/htdocs
(it is still running...)

But that is an expected result, I will be back at work on Sunday.


> 
> say? If no hits, does adding --reflogs to the command-line change it?
> 
> We also consider blobs in the index reachable. I don't recall offhand
> whether that applies to trees mentioned by the cache-trees extension. I
> don't _think_ that would apply to your broken tree, since they'd have
> been generated by Git itself, but possibly removing .git/index (if this
> isn't a bare repo) would help?
> 
> -Peff




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