$ git clone -n https://gitee.com/opencloudos-stream/kmag.git /var/lib/mock/dist-rebuild-after-rpm-check-build-180212-11736/root/chroot_tmpdir/scmroot/kmag
Cloning into '/var/lib/mock/dist-rebuild-after-rpm-check-build-180212-11736/root/chroot_tmpdir/scmroot/kmag'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/kmag
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7aeca0 update