$ git clone -n https://src.fedoraproject.org/rpms/ghc-vector-algorithms.git /var/lib/mock/f45-build-10942-425/root/chroot_tmpdir/scmroot/ghc-vector-algorithms
Cloning into '/var/lib/mock/f45-build-10942-425/root/chroot_tmpdir/scmroot/ghc-vector-algorithms'...
$ git fetch origin cacc2c2942f336dcb74b385f8c914e917780466f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-vector-algorithms
 * [new ref]         cacc2c2942f336dcb74b385f8c914e917780466f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cacc2c2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild