How to use custom input with backbones?

[Inquisitive-ME]

I'm trying to figure out how I could use a backbone from Keras Hub with a custom input. For example if I want to have a 4 channel instead of a 3 channel input for yolo_v8_l_backbone_coco it does not seem possible. This however is extremely easy with the Keras Application models because they all take in custom inputs as an option when creating the model.