Cloning this repository:

git clone git://gitorious.org/~groher/qt-labs/grohers-scene-graph.git grohers-scene-graph
cd grohers-scene-graph

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

git remote add grohers-scene-graph git://gitorious.org/~groher/qt-labs/grohers-scene-graph.git
git fetch grohers-scene-graph
git checkout -b my-local-tracking-branch grohers-scene-graph/master_or_other_branch