An outside collaborator is a person who is not a member of your organization, but has access to one or more of your organization's repositories. You can choose the level of access to grant for each outside collaborator. 将外部协作者添加仓库时，还需要将他们添加到您希望他们访问的任何仓库分叉中。
Organizations that use GitHub Enterprise Cloud can restrict the ability to invite collaborators. For more information, see "Setting permissions for adding outside collaborators" in the GitHub Enterprise Cloud documentation.
If your organization requires two-factor authentication, all outside collaborators must enable two-factor authentication before accepting your invitation to collaborate on a repository. For more information, see "Requiring two-factor authentication in your organization."
You can give outside collaborators access to a repository in your repository settings. For more information, see "Managing teams and people with access to your repository."