Cloning this repository:

git clone git://gitorious.org/~exal/rhythmbox-youtube/exals-rhythmbox-youtube.git exals-rhythmbox-youtube
cd exals-rhythmbox-youtube

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

git remote add exals-rhythmbox-youtube git://gitorious.org/~exal/rhythmbox-youtube/exals-rhythmbox-youtube.git
git fetch exals-rhythmbox-youtube
git checkout -b my-local-tracking-branch exals-rhythmbox-youtube/master_or_other_branch