$ git clone -n https://src.fedoraproject.org/rpms/janino.git /var/lib/mock/f40-build-2559956-62118/root/chroot_tmpdir/scmroot/janino
Cloning into '/var/lib/mock/f40-build-2559956-62118/root/chroot_tmpdir/scmroot/janino'...
$ git fetch origin a12063953744179e5847eb45ee9c89ec6c4fa5ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/janino
 * [new ref]         a12063953744179e5847eb45ee9c89ec6c4fa5ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a120639 Merge #2 `Set Java source/target to 1.8 to build with JDK 21`