$ git clone -n https://src.fedoraproject.org/rpms/perl-Tie-Hash-Method.git /var/lib/mock/f45-build-27181-621/root/chroot_tmpdir/scmroot/perl-Tie-Hash-Method
Cloning into '/var/lib/mock/f45-build-27181-621/root/chroot_tmpdir/scmroot/perl-Tie-Hash-Method'...
$ git fetch origin ef191b73a18aa72f45a6cdd754ab98ef0a862db4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tie-Hash-Method
 * [new ref]         ef191b73a18aa72f45a6cdd754ab98ef0a862db4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef191b7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild