A user got this error:

c:\off1\src\officemobile\android>git maintenance run --task=cache-local-objects
fatal: failed to copy '.git/objects/07/<hash>' to 'C:\.scalarCache/id_{guid}/07/<hash>': File exists

This must be hitting a lot more folks, especially those who have multiple enlistments sharing a scalar cache.

I suspect that this could be blocking some background maintenance tasks if this happens before the loose-objects or incremental-repack tasks.

It's possible that running git maintenance run --task=loose-objects (twice!) could remove the loose object from being in the way before running the cache-local-objects task again.