$ git clone -n https://src.fedoraproject.org/rpms/xfce4-screensaver.git /var/lib/mock/f31-build-101114-33352/root/chroot_tmpdir/scmroot/xfce4-screensaver
Cloning into '/var/lib/mock/f31-build-101114-33352/root/chroot_tmpdir/scmroot/xfce4-screensaver'...
$ git reset --hard 902073f9b1455ec5ea575be654ea43373e5e02cc
HEAD is now at 902073f Add libwnck3-devel as buildrequires