$ git clone -n https://src.fedoraproject.org/rpms/VirtualGL.git /var/lib/mock/f41-build-710606-13019/root/chroot_tmpdir/scmroot/VirtualGL
Cloning into '/var/lib/mock/f41-build-710606-13019/root/chroot_tmpdir/scmroot/VirtualGL'...
$ git fetch origin fd575cf17fd9b78b80f51b2ac22a9c614d27f901:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/VirtualGL
 * [new ref]         fd575cf17fd9b78b80f51b2ac22a9c614d27f901 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd575cf Eliminate use of obsolete %patchN syntax (#2283636)