$ git clone -n https://src.fedoraproject.org/rpms/go2rpm.git /var/lib/mock/f45-build-11662-433/root/chroot_tmpdir/scmroot/go2rpm
Cloning into '/var/lib/mock/f45-build-11662-433/root/chroot_tmpdir/scmroot/go2rpm'...
$ git fetch origin d341f34deb26db8b73f8888e911876a6697be3bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/go2rpm
 * [new ref]         d341f34deb26db8b73f8888e911876a6697be3bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d341f34 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild