You can change your GitHub Enterprise username at any time.

After you've renamed your user account, update the remote repository URL in any local clones of your repositories. For more information, see What happens when I change my user name?

  1. In the top right corner of any page, click . Settings icon in the user bar
  2. In the left sidebar, click Account settings. Account settings menu option

  3. In the "Change username" section, click Change username. Change Username button