$ git clone -n https://gitee.com/opencloudos-stream/rust-vec1.git /var/lib/mock/dist-oc9-epol-build-99414-60445/root/chroot_tmpdir/scmroot/rust-vec1
Cloning into '/var/lib/mock/dist-oc9-epol-build-99414-60445/root/chroot_tmpdir/scmroot/rust-vec1'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-vec1
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c1887d update