$ git clone -n https://src.fedoraproject.org/rpms/ghc-monad-par.git /var/lib/mock/f45-build-52226-908/root/chroot_tmpdir/scmroot/ghc-monad-par
Cloning into '/var/lib/mock/f45-build-52226-908/root/chroot_tmpdir/scmroot/ghc-monad-par'...
$ git fetch origin 4360769ca736c26f5a8f798c78981a4d2e3cbaa9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-monad-par
 * [new ref]         4360769ca736c26f5a8f798c78981a4d2e3cbaa9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4360769 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild