[PATCH] upload-pack: only accept commits from shallow line

We only allow cuts at commits, not arbitrary objects. upload-pack will fail eventually in register_shallow if a non-commit is given with a generic error Object %s is a %s, not a commit. Check it early and give a more accurate error. This should never show up in an ordinary session. It's for buggy

Re: [PATCH] upload-pack: only accept commits from shallow line

Nguyễn Thái Ngọc Duy pclo...@gmail.com writes: We only allow cuts at commits, not arbitrary objects. upload-pack will fail eventually in register_shallow if a non-commit is given with a generic error Object %s is a %s, not a commit. Check it early and give a more accurate error. This should