$ git clone -n https://gitee.com/opencloudos-stream/rust-sval.git /var/lib/mock/dist-oc9-epol-build-89365-58398/root/chroot_tmpdir/scmroot/rust-sval
Cloning into '/var/lib/mock/dist-oc9-epol-build-89365-58398/root/chroot_tmpdir/scmroot/rust-sval'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-sval
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81fa309 update