$ git clone -n https://src.fedoraproject.org/rpms/Box2D.git /var/lib/mock/f33-build-343397-59003/root/chroot_tmpdir/scmroot/Box2D
Cloning into '/var/lib/mock/f33-build-343397-59003/root/chroot_tmpdir/scmroot/Box2D'...
$ git reset --hard f1ea5c788c1660900e24e3acb93d75da88b37235
HEAD is now at f1ea5c7 2.4.1