$ git clone -n https://src.fedoraproject.org/rpms/ghc-html.git /var/lib/mock/f45-build-10414-416/root/chroot_tmpdir/scmroot/ghc-html
Cloning into '/var/lib/mock/f45-build-10414-416/root/chroot_tmpdir/scmroot/ghc-html'...
$ git fetch origin 4cd70e76cbcb7904ddcba9233f3ff8542cc7fbf8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-html
 * [new ref]         4cd70e76cbcb7904ddcba9233f3ff8542cc7fbf8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4cd70e7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild