$ git clone -n https://src.fedoraproject.org/rpms/cups.git /var/lib/mock/f41-build-842611-161627/root/chroot_tmpdir/scmroot/cups
Cloning into '/var/lib/mock/f41-build-842611-161627/root/chroot_tmpdir/scmroot/cups'...
$ git fetch origin 3b9560ddb1133d0de7a3e10709365c224abbba7f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cups
 * [new ref]         3b9560ddb1133d0de7a3e10709365c224abbba7f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b9560d fix lspp build