$ git clone -n https://gitee.com/opencloudos-stream/trousers.git /var/lib/mock/dist-ocs23-build-41667-2059/root/chroot_tmpdir/scmroot/trousers
Cloning into '/var/lib/mock/dist-ocs23-build-41667-2059/root/chroot_tmpdir/scmroot/trousers'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/trousers
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c740932 update