$ git clone -n https://src.fedoraproject.org/rpms/x11trace.git /var/lib/mock/f41-build-726063-13125/root/chroot_tmpdir/scmroot/x11trace
Cloning into '/var/lib/mock/f41-build-726063-13125/root/chroot_tmpdir/scmroot/x11trace'...
$ git fetch origin c2764705a243aa1875346205babf3a0cfa9155ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/x11trace
 * [new ref]         c2764705a243aa1875346205babf3a0cfa9155ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c276470 Eliminate use of obsolete %patchN syntax (#2283636)