$ git clone -n https://src.fedoraproject.org/rpms/perl-Module-cpmfile.git /var/lib/mock/f45-build-24920-607/root/chroot_tmpdir/scmroot/perl-Module-cpmfile
Cloning into '/var/lib/mock/f45-build-24920-607/root/chroot_tmpdir/scmroot/perl-Module-cpmfile'...
$ git fetch origin 7e0b2eeda08928472c160c6130ea362bec584256:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Module-cpmfile
 * [new ref]         7e0b2eeda08928472c160c6130ea362bec584256 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e0b2ee Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild