$ git clone -n https://src.fedoraproject.org/rpms/perl-Mon.git /var/lib/mock/f45-build-24966-607/root/chroot_tmpdir/scmroot/perl-Mon
Cloning into '/var/lib/mock/f45-build-24966-607/root/chroot_tmpdir/scmroot/perl-Mon'...
$ git fetch origin 3fb352fe5864101e37df0128ea2ff5ae3858b20a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mon
 * [new ref]         3fb352fe5864101e37df0128ea2ff5ae3858b20a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fb352f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild