$ git clone -n https://src.fedoraproject.org/rpms/CGAL.git /var/lib/mock/f31-build-48259-27072/root/chroot_tmpdir/scmroot/CGAL
Cloning into '/var/lib/mock/f31-build-48259-27072/root/chroot_tmpdir/scmroot/CGAL'...
$ git reset --hard 789f54b1976f0fede74c58dbc9af4f33639ea717
HEAD is now at 789f54b Fix the spec file