Cloning this repository:

git clone git://gitorious.org/python-opencl/python-opencl.git python-opencl
cd python-opencl

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

git remote add python-opencl git://gitorious.org/python-opencl/python-opencl.git
git fetch python-opencl
git checkout -b my-local-tracking-branch python-opencl/master_or_other_branch