$ git clone -n https://src.fedoraproject.org/rpms/statserial.git /var/lib/mock/f41-build-1182644-21975/root/chroot_tmpdir/scmroot/statserial
Cloning into '/var/lib/mock/f41-build-1182644-21975/root/chroot_tmpdir/scmroot/statserial'...
$ git fetch origin d4c53170dd4c7668f8272a6a473a61935e080cb6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/statserial
 * [new ref]         d4c53170dd4c7668f8272a6a473a61935e080cb6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4c5317 Eliminate use of obsolete %patchN syntax (#2283636)