$ git clone -n https://src.fedoraproject.org/rpms/ghc-basement.git /var/lib/mock/f45-build-10012-412/root/chroot_tmpdir/scmroot/ghc-basement
Cloning into '/var/lib/mock/f45-build-10012-412/root/chroot_tmpdir/scmroot/ghc-basement'...
$ git fetch origin e7e9ab2ace7d43545b1a8746bc767d6249bda0c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-basement
 * [new ref]         e7e9ab2ace7d43545b1a8746bc767d6249bda0c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e7e9ab2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild