share-rerere-cache: fixed handling of modified files in rr-cache
share-rerere-cache: fixed handling of modified files in rr-cache

- there were modified files leaking in rr-cache directory.
These are not automatically commited and resulted in bloated git status.
Since these files should be only thisimage
files from git rerere, it should be save to delete these changes.
Which we now do.

ceddue/git-bpf,ceddue/git-bpf