$ git clone -n https://gitee.com/opencloudos-stream/emacs.git /var/lib/mock/dist-ocs23-base-build-269641-25836/root/chroot_tmpdir/scmroot/emacs
Cloning into '/var/lib/mock/dist-ocs23-base-build-269641-25836/root/chroot_tmpdir/scmroot/emacs'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/emacs
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a3e3fb Rebuilt for loongarch release