$ git clone -n https://src.fedoraproject.org/rpms/ghc-cheapskate.git /var/lib/mock/f45-build-10099-413/root/chroot_tmpdir/scmroot/ghc-cheapskate
Cloning into '/var/lib/mock/f45-build-10099-413/root/chroot_tmpdir/scmroot/ghc-cheapskate'...
$ git fetch origin 62ef0bb8db76e20989fdb0ca2b1c8c40c226d099:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cheapskate
 * [new ref]         62ef0bb8db76e20989fdb0ca2b1c8c40c226d099 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62ef0bb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild