Git Repo Compression

git_compression_commands.txt

$ git reflog expire --expire=1.minute refs/heads/master
$ git fsck --unreachable      
$ git prune                   
$ git gc 

Reference: http://www.newartisans.com/blog/2008/04/diving-into-git.html

Basically this removes all reflogs that are older than a minute for the master branch, finds and deletes any commits that aren’t being used, then does some general cleanup on the whole repository to further compress it. This could have had its own tip, but it’s probably better to illustrate a great use of the subject’s subcommands in your workflow.
 -- http://gitready.com/intermediate/2009/02/09/reflog-your-safety-net.html