$ git clone -n https://src.fedoraproject.org/rpms/ghc-spdx.git /var/lib/mock/f45-build-10752-424/root/chroot_tmpdir/scmroot/ghc-spdx
Cloning into '/var/lib/mock/f45-build-10752-424/root/chroot_tmpdir/scmroot/ghc-spdx'...
$ git fetch origin f977d0658080c3ff739ab8efe535f30f9fa6ac8e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-spdx
 * [new ref]         f977d0658080c3ff739ab8efe535f30f9fa6ac8e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f977d06 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild