$ git clone -n https://gitee.com/opencloudos-stream/rust-nu-system.git /var/lib/mock/dist-ocs23-epol9-build-206001-14724/root/chroot_tmpdir/scmroot/rust-nu-system
Cloning into '/var/lib/mock/dist-ocs23-epol9-build-206001-14724/root/chroot_tmpdir/scmroot/rust-nu-system'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-nu-system
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6f7615 update