The latest flavor of trying to fix Gimp's UI by modifying it to look like Photoshop. These go back decades and usually end up being abandoned after a few years.

https://github.com/Diolinux/PhotoGIMP

The whole premise is flawed. Gimp should be a viable program on its own, by having a UI that actually makes sense and not by copying the market leader, because this will always mean playing catch-up, it will always mean being seen as a lesser copy.