$ git clone -n https://gitee.com/gordonwwang/rust_1.git /var/lib/mock/dist-ocs23-build-195386-13252/root/chroot_tmpdir/scmroot/rust_1
Cloning into '/var/lib/mock/dist-ocs23-build-195386-13252/root/chroot_tmpdir/scmroot/rust_1'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/gordonwwang/rust_1
 * [new ref]         HEAD       -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c512606 update rust.spec.