$ git clone -n https://src.fedoraproject.org/rpms/ckb-next.git /var/lib/mock/f40-build-2283596-55595/root/chroot_tmpdir/scmroot/ckb-next
Cloning into '/var/lib/mock/f40-build-2283596-55595/root/chroot_tmpdir/scmroot/ckb-next'...
$ git fetch origin a0bdf1add7adb3c32ae2e7c558999586baae3416:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ckb-next
 * [new ref]         a0bdf1add7adb3c32ae2e7c558999586baae3416 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0bdf1a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild