$ git clone -n https://src.fedoraproject.org/rpms/perl-Menlo.git /var/lib/mock/f45-build-24784-606/root/chroot_tmpdir/scmroot/perl-Menlo
Cloning into '/var/lib/mock/f45-build-24784-606/root/chroot_tmpdir/scmroot/perl-Menlo'...
$ git fetch origin 4dc77f2f3415ab3dba97fe96211d786de8fd4fd3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Menlo
 * [new ref]         4dc77f2f3415ab3dba97fe96211d786de8fd4fd3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4dc77f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild