From Open64 Wiki
The Open64 SVN source repository is available read-only to everyone. The SVN server is at https://svn.open64.net/svnroot/open64. You can checkout the latest Open64 sources under development with the following command:
$ svn checkout https://svn.open64.net/svnroot/open64/trunk <local-directory>
Write access to the Open64 SVN sources is limited to approved developers. A request for access can be made via email to any of the Gatekeepers for Open64. The MAINTAINERS file in the top-level directory for Open64 source tree contains a list of all the gatekeepers. Once you receive an approval email, add your name to the MAINTAINERS file and checkin this change. If this is successful, you can now checkin source changes following the Open64 checkin policy.