Cloning this repository:

git clone git://gitorious.org/~auto-amc/qml-box2d/auto-amcs-qml-box2d.git auto-amcs-qml-box2d
cd auto-amcs-qml-box2d

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

git remote add auto-amcs-qml-box2d git://gitorious.org/~auto-amc/qml-box2d/auto-amcs-qml-box2d.git
git fetch auto-amcs-qml-box2d
git checkout -b my-local-tracking-branch auto-amcs-qml-box2d/master_or_other_branch