$ git clone -n https://src.fedoraproject.org/rpms/x11docker.git /var/lib/mock/f40-build-2685351-68015/root/chroot_tmpdir/scmroot/x11docker
Cloning into '/var/lib/mock/f40-build-2685351-68015/root/chroot_tmpdir/scmroot/x11docker'...
$ git fetch origin 9c3ea7d11b7c2bc65acd11e81f8f50409b0c2b38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/x11docker
 * [new ref]         9c3ea7d11b7c2bc65acd11e81f8f50409b0c2b38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c3ea7d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild