$ git clone -n https://src.fedoraproject.org/rpms/perl-Module-Starter.git /var/lib/mock/f45-build-24912-607/root/chroot_tmpdir/scmroot/perl-Module-Starter
Cloning into '/var/lib/mock/f45-build-24912-607/root/chroot_tmpdir/scmroot/perl-Module-Starter'...
$ git fetch origin 71cacab6894d76f1c08fdf33072fc3437c723b10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Module-Starter
 * [new ref]         71cacab6894d76f1c08fdf33072fc3437c723b10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71cacab Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild