Cloning this repository:

git clone git://gitorious.org/~jazh/maemo-multimedia/jazhs-gst-plugins-base.git jazhs-gst-plugins-base
cd jazhs-gst-plugins-base

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

git remote add jazhs-gst-plugins-base git://gitorious.org/~jazh/maemo-multimedia/jazhs-gst-plugins-base.git
git fetch jazhs-gst-plugins-base
git checkout -b my-local-tracking-branch jazhs-gst-plugins-base/master_or_other_branch