$ git clone -n https://gitee.com/opencloudos-stream/obs-signd.git /var/lib/mock/dist-oc9-epol-build-151246-79728/root/chroot_tmpdir/scmroot/obs-signd
Cloning into '/var/lib/mock/dist-oc9-epol-build-151246-79728/root/chroot_tmpdir/scmroot/obs-signd'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/obs-signd
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ccafb48 !1 Rebuilt for loongarch64 Merge pull request !1 from brucezhang/master