Hello,
at https://community.kde.org/Get_Involved/ ... figure_Git is written, that when contributing to KDE, I should use my real name as a git username:

The name you provide should be your actual name, not your KDE Identity username.

I would like to contribute to KDE, but stay anonymous. So why is this rule there? What is the real name needed for?

Please talk to the Sysadmins for this: https://go.kde.org/systickets