Cloning this repository:

git clone git://gitorious.org/rb-lastfm/rb-lastfm.git rb-lastfm
cd rb-lastfm

Add this repository as a remote to an existing local repository:

git remote add rb-lastfm git://gitorious.org/rb-lastfm/rb-lastfm.git
git fetch rb-lastfm
git checkout -b my-local-tracking-branch rb-lastfm/master_or_other_branch