$ git clone -n https://src.fedoraproject.org/rpms/CGAL.git /var/lib/mock/f40-build-1992477-43602/root/chroot_tmpdir/scmroot/CGAL
Cloning into '/var/lib/mock/f40-build-1992477-43602/root/chroot_tmpdir/scmroot/CGAL'...
$ git fetch origin 499fe30f7dc8aaf63f86b2410213b7e39012bff2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/CGAL
 * [new ref]         499fe30f7dc8aaf63f86b2410213b7e39012bff2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 499fe30 new upstream release CGAL 5.6