$ git clone -n https://src.fedoraproject.org/rpms/rumor.git /var/lib/mock/f40-build-750552-115123/root/chroot_tmpdir/scmroot/rumor
Cloning into '/var/lib/mock/f40-build-750552-115123/root/chroot_tmpdir/scmroot/rumor'...
$ git fetch origin 19dfc436af97c7677bfcdb1dc74849afaac90138:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rumor
 * [new ref]         19dfc436af97c7677bfcdb1dc74849afaac90138 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19dfc43 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild