Because the person in charge of the repository said so?
Just because something is open source (like most of my projects are open source), that doesn't mean the project owner must now accept any changes anyone in the world wants to make. Particularly when this 'anyone' is being paid by a company to implement what this company wants in a repository owned by said company.
That's not to say that open source is useless: if it were closed source, you wouldn't have been able to tell that the code is in the repo, just not activated, and you wouldn't have the option to fork it and enable it yourself and make your own custom build (freedom to study, modify, redistribute, and run), or pay someone else to make this change for you. Try that with Microsoft Windows source code, you can't study or modify that or even run it without permission.
Just because something is open source (like most of my projects are open source), that doesn't mean the project owner must now accept any changes anyone in the world wants to make. Particularly when this 'anyone' is being paid by a company to implement what this company wants in a repository owned by said company.
That's not to say that open source is useless: if it were closed source, you wouldn't have been able to tell that the code is in the repo, just not activated, and you wouldn't have the option to fork it and enable it yourself and make your own custom build (freedom to study, modify, redistribute, and run), or pay someone else to make this change for you. Try that with Microsoft Windows source code, you can't study or modify that or even run it without permission.