$ git clone -n https://gitee.com/opencloudos-stream/rust-serde_json.git /var/lib/mock/dist-oc9-epol-build-89107-58348/root/chroot_tmpdir/scmroot/rust-serde_json
Cloning into '/var/lib/mock/dist-oc9-epol-build-89107-58348/root/chroot_tmpdir/scmroot/rust-serde_json'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-serde_json
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf1a87d update