Cloning this repository:

git clone git://gitorious.org/~porryfish/maemo-multimedia/porryfishs-gstreamer.git porryfishs-gstreamer
cd porryfishs-gstreamer

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

git remote add porryfishs-gstreamer git://gitorious.org/~porryfish/maemo-multimedia/porryfishs-gstreamer.git
git fetch porryfishs-gstreamer
git checkout -b my-local-tracking-branch porryfishs-gstreamer/master_or_other_branch