$ git clone -n https://gitee.com/opencloudos-stream/ummu.git /var/lib/mock/dist-oc9-epol-build-239660-82617/root/chroot_tmpdir/scmroot/ummu
Cloning into '/var/lib/mock/dist-oc9-epol-build-239660-82617/root/chroot_tmpdir/scmroot/ummu'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ummu
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31a2e8f !1 upload for ummu. Merge pull request !1 from huwentao/master