$ git clone -n https://src.fedoraproject.org/rpms/ultimatestunts.git /var/lib/mock/f41-build-1042188-18998/root/chroot_tmpdir/scmroot/ultimatestunts
Cloning into '/var/lib/mock/f41-build-1042188-18998/root/chroot_tmpdir/scmroot/ultimatestunts'...
$ git fetch origin 2fcc41b341d2f9ecd5ea7650af22a2757d669fbf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ultimatestunts
 * [new ref]         2fcc41b341d2f9ecd5ea7650af22a2757d669fbf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fcc41b Eliminate use of obsolete %patchN syntax (#2283636)