$ git clone -n https://src.fedoraproject.org/rpms/perl-WWW-RobotRules.git /var/lib/mock/f45-build-27411-624/root/chroot_tmpdir/scmroot/perl-WWW-RobotRules
Cloning into '/var/lib/mock/f45-build-27411-624/root/chroot_tmpdir/scmroot/perl-WWW-RobotRules'...
$ git fetch origin c954d75bb78416bdc6c81d73f9b04c0eb6e5b03a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-WWW-RobotRules
 * [new ref]         c954d75bb78416bdc6c81d73f9b04c0eb6e5b03a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c954d75 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild