I'm trying to use CodeIgniter for one of my github projects and would like to use the "Fork" feature to do it. However, I just need one branch (the stable one) for my repo. Cloning the whole CodeIgniter repository gives me about 30M of data, most of which I don't need.
How can I fork a specific branch of a repository from within Github (so I have the "forked from..." thing on my repo). Is this possible?