Projects can assign roles to people who want access to the project GitHub repositories. Each role gives a different level of access. For Apache projects, the available roles are:
As of September, 2020 Apache projects can assign the GitHub triage role to PMC members, committers, and others with a vote link, to help with management of their code repository.
A person with the triage role can
Git recommends the role "for contributors who need to proactively manage issues and pull requests without write access." It is a good role for people who are interested in supporting and contributing to the project, but who are not ready to be Committers.
Read more at Permission levels for repositories.