$ git clone -n https://gitee.com/src-opencloudos-rpms/grubby.git /var/lib/mock/dist-oc8-build-74678-51019/root/chroot_tmpdir/scmroot/grubby
Cloning into '/var/lib/mock/dist-oc8-build-74678-51019/root/chroot_tmpdir/scmroot/grubby'...
$ git fetch origin 9d95129e2bf993715d550d00671770eac6d13ea0:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grubby
 * [new ref]         9d95129e2bf993715d550d00671770eac6d13ea0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d95129 import grubby-8.40-49.tl3