I'm using git for keeping all my sites backup here. It works very well, I can jump in and out of a expecific backup with a command.
The problem is, this is incremental. Even if I exclude a file now, it will still be there in the old revisions. This is good, but there are some big files, like sql backups, that I dont need to keep all the history.
As I backup my database everyday, in a different file name, I'm running out of space =p
How can I permanently remove old/deleted files from my git repository?