Cloning this repository:

git clone git://gitorious.org/gitgraphs/gitgraphs.git gitgraphs
cd gitgraphs

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

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