Short on disk space ? Using Git?
$ git fetch --all --prune
$ du -sh .git && git gc --aggressive && du -sh .git
13M .git
Enumerating […]
6.5M .git
Drop all removed upstream branches. You may check if you want to keep them, they are still listed as dangling commits by git fsck before you git gc. Compress the repository and see how much it worked ; can be up to 50%