文章版本： Enterprise Server 2.17
For greater collaboration, you can allow commits on branches you've created from forks owned by your user account.
People with push access to the upstream repository of a fork owned by a user account can commit to the forked branches.
Only pull request authors can give upstream repository maintainers, or those with push access to the upstream repository, permission to make commits to their pull request's compare branch in a user-owned fork. 要详细了解上游仓库，请参阅“关于复刻”。
Pull request authors can give these permissions when they initially create a pull request from a user-owned fork or after they create the pull request. For more information, see "Creating a pull request from a fork."
在 GitHub Enterprise 上，导航到拉取请求上游仓库的主页面。
在上游仓库名称下，单击 Pull requests（拉取请求）。
On user-owned forks, if you do not want to allow anyone with push access to the upstream repository to make changes to your pull request, unselect Allow edits from maintainers.