When I run git lfs prune --dry-run --force I got this:
prune: 1 local object, 0 retained, done.
prune: 1 file would be pruned (23 MB), done.
I know that one object, and I want to keep it. It is only 23M But my .git/lfs/ folder is 176M. How is this possible? How to prune everything except that one file?