$ git clone -n https://src.fedoraproject.org/rpms/ghc-select-rpms.git /var/lib/mock/f45-build-10727-422/root/chroot_tmpdir/scmroot/ghc-select-rpms
Cloning into '/var/lib/mock/f45-build-10727-422/root/chroot_tmpdir/scmroot/ghc-select-rpms'...
$ git fetch origin acb6477609fe10da03de40cd82d9017099e555f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-select-rpms
 * [new ref]         acb6477609fe10da03de40cd82d9017099e555f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acb6477 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild