$ git clone -n https://src.fedoraproject.org/rpms/preprocess.git /var/lib/mock/f40-build-2311860-57538/root/chroot_tmpdir/scmroot/preprocess
Cloning into '/var/lib/mock/f40-build-2311860-57538/root/chroot_tmpdir/scmroot/preprocess'...
$ git fetch origin d46f8050a1f59304ffe58ee7b2950c1940a31327:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/preprocess
 * [new ref]         d46f8050a1f59304ffe58ee7b2950c1940a31327 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d46f805 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild