$ git clone -n https://gitee.com/opencloudos-stream/obmm.git /var/lib/mock/dist-oc9-epol-build-244122-83207/root/chroot_tmpdir/scmroot/obmm
Cloning into '/var/lib/mock/dist-oc9-epol-build-244122-83207/root/chroot_tmpdir/scmroot/obmm'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/obmm
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1895412 !1 Package init Merge pull request !1 from zhaolichang/master