$ git clone -n https://src.fedoraproject.org/rpms/ghc-reducers.git /var/lib/mock/f40-build-777054-129193/root/chroot_tmpdir/scmroot/ghc-reducers
Cloning into '/var/lib/mock/f40-build-777054-129193/root/chroot_tmpdir/scmroot/ghc-reducers'...
$ git fetch origin 95b4c59f2ad57af0fb5520ac55eaacc6d387c69e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-reducers
 * [new ref]         95b4c59f2ad57af0fb5520ac55eaacc6d387c69e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 95b4c59 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild