About changing the default branch
You can choose the default branch for a repository. The default branch is the base branch for pull requests and code commits. For more information about the default branch, see "About branches."
Note: If you use the Git-Subversion bridge, changing the default branch will affect your trunk branch contents and the HEAD you see when you list references for the remote repository. For more information, see "Support for Subversion clients" and git-ls-remote in the Git documentation.
You can set the name of the default branch for new repositories. For more information, see "Managing the default branch for your repositories," "Managing the default branch name for repositories in your organization," or "Enforcing a policy on the default branch name."
基本要求
To change the default branch, your repository must have more than one branch. 更多信息请参阅“创建和删除仓库中的分支”。
Changing the default branch
- 在 GitHub 上,导航到仓库的主页面。
- 在仓库名称下,单击 Settings(设置)。

- 在左侧菜单中,单击 Branches(分支)。

- Under "Default branch", to the right of the default branch name, click .

- Use the drop-down, then click a branch name.

- 单击 Update(更新)。

- Read the warning, then click I understand, update the default branch.
