$ git clone -n https://src.fedoraproject.org/rpms/emacs.git /var/lib/mock/f40-build-751018-115699/root/chroot_tmpdir/scmroot/emacs
Cloning into '/var/lib/mock/f40-build-751018-115699/root/chroot_tmpdir/scmroot/emacs'...
$ git fetch origin 927faab5c06bdae0cb2d6200e4f65f392513f61f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs
 * [new ref]         927faab5c06bdae0cb2d6200e4f65f392513f61f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 927faab Recommend libtree-sitter-java.