git-relink - Hardlink common objects in local repositories
git relink [--safe] <dir>... <master_dir>
This will scan 1 or more object repositories and look for objects in common with
a master repository. Objects not already hardlinked to the master repository
will be replaced with a hardlink to the master repository.
Stops if two objects with the same hash exist
but have different sizes. Default is to warn and continue.
Directories containing a .git/objects/
Part of the git