$ git clone -n https://src.fedoraproject.org/rpms/ghc-string-conversions.git /var/lib/mock/f45-build-10809-424/root/chroot_tmpdir/scmroot/ghc-string-conversions
Cloning into '/var/lib/mock/f45-build-10809-424/root/chroot_tmpdir/scmroot/ghc-string-conversions'...
$ git fetch origin eb2c8445f41d27049380648b7db687b71139b425:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-string-conversions
 * [new ref]         eb2c8445f41d27049380648b7db687b71139b425 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb2c844 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild