$ git clone -n https://gitee.com/opencloudos-stream/scdoc.git /var/lib/mock/dist-oc9-epol-build-65839-16665/root/chroot_tmpdir/scmroot/scdoc
Cloning into '/var/lib/mock/dist-oc9-epol-build-65839-16665/root/chroot_tmpdir/scmroot/scdoc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/scdoc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 784ac54 !1 initial Merge pull request !1 from jeremiazhao/master