Cloning this repository:

git clone git://gitorious.org/~technoweenie/diff-display/technoweenies-mainline-clone.git technoweenies-mainline-clone
cd technoweenies-mainline-clone

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

git remote add technoweenies-mainline-clone git://gitorious.org/~technoweenie/diff-display/technoweenies-mainline-clone.git
git fetch technoweenies-mainline-clone
git checkout -b my-local-tracking-branch technoweenies-mainline-clone/master_or_other_branch