Cloning this repository:

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

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

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