$ git clone -n https://gitee.com/opencloudos-stream/rust-rustc_version.git /var/lib/mock/dist-oc9-epol-build-88976-58316/root/chroot_tmpdir/scmroot/rust-rustc_version
Cloning into '/var/lib/mock/dist-oc9-epol-build-88976-58316/root/chroot_tmpdir/scmroot/rust-rustc_version'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-rustc_version
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2263c2a update