$ git clone -n https://src.fedoraproject.org/rpms/v8-314.git /var/lib/mock/f40-build-2368328-60387/root/chroot_tmpdir/scmroot/v8-314
Cloning into '/var/lib/mock/f40-build-2368328-60387/root/chroot_tmpdir/scmroot/v8-314'...
$ git fetch origin 4e1f166cc25eaca8bee207a78cf0c873da6e08b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/v8-314
 * [new ref]         4e1f166cc25eaca8bee207a78cf0c873da6e08b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e1f166 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild