Thanks for your help, I subscribed opensuse-project list now.
I noticed that I should be invited to join a organization(openSUSE) in github, Could you or anyone in this mailing list with admin privilege do it for me?
I personally only was added to the project when I needed access to it (in particular when a project I worked on became an openSUSE project). As with OBS submit requests, all requests on openSUSE projects should go through pull requests (if they're on GitHub) so having maintainer status (or member status) there shouldn't be urgent either.
Also I believe you need to be an openSUSE member first, but I could be wrong about that (not that becoming a member is difficult, it's actually very simple).