`seaf-cli` not syncing all files in `git` repository

[tvwenger]

This might be related to #2677

Recently, seaf-cli has started ignoring some files in .git folders, resulting in corrupted git repositories. Just now, I:

1. initialized a new git repository on zeus
2. waited for it to sync to jansky
3. copied the .git folders from zeus and jansky to compare:

$ diff -r jansky_git/ zeus_git/
Only in zeus_git/objects/pack: pack-1a32e12ba9e555fb63cdc1a2d6ac68697b7bdab6.idx
Only in zeus_git/objects/pack: pack-1a32e12ba9e555fb63cdc1a2d6ac68697b7bdab6.pack

seaf-cli status reports synchronized on both machines, yet these two files exist only on zeus.

Why is seafile ignoring these files?

[feiniks]

This issue is the same as #2677 .