git count-objects -v
git gc  --auto # this is enough to remove loose objects and repack repo
git count-objects -v

# more instruction
git repack -Ad # Remove dangling objects from packfiles
git prune # Remove dangling loose objects
git gc --aggressive --prune=now --force  || rm -f .git/objects/*/tmp_* && rm -f .git/objects/*/.tmp-*

git count-objects -v