Cloning this repository:

git clone git://gitorious.org/~kumar88vaibhav/qt-labs/kumar88vaibhavs-qt3d.git kumar88vaibhavs-qt3d
cd kumar88vaibhavs-qt3d

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

git remote add kumar88vaibhavs-qt3d git://gitorious.org/~kumar88vaibhav/qt-labs/kumar88vaibhavs-qt3d.git
git fetch kumar88vaibhavs-qt3d
git checkout -b my-local-tracking-branch kumar88vaibhavs-qt3d/master_or_other_branch