title: Managing .git file size
body: <p>My .git file has grown to 229Mb and I wondering what the best way to cut down the size is.  I know about git gc and have been using it a fair amount.  I'm not totally sure about how git works, but I know that there is packaged information in there that I no longer need.  Like, I know I no longer need the first five branches saved.  Is there a way to completely erase really old branches or commits or something like that?</p>