Cloning this repository:

git clone git://gitorious.org/~cocomo/protovis/cocomos-jloves-protovis.git cocomos-jloves-protovis
cd cocomos-jloves-protovis

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

git remote add cocomos-jloves-protovis git://gitorious.org/~cocomo/protovis/cocomos-jloves-protovis.git
git fetch cocomos-jloves-protovis
git checkout -b my-local-tracking-branch cocomos-jloves-protovis/master_or_other_branch