$ git clone -n https://src.fedoraproject.org/rpms/janino.git /var/lib/mock/f38-build-side-42-init-devel-570990-25910/root/chroot_tmpdir/scmroot/janino
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-570990-25910/root/chroot_tmpdir/scmroot/janino'...
$ git fetch origin 03d5f4a0bf4aeeef5d2fd1ade79fb1e4197ff65a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/janino
 * [new ref]         03d5f4a0bf4aeeef5d2fd1ade79fb1e4197ff65a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03d5f4a Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild