How to use fetch mocking and msw together

[wslp12]

I'm currently using msw well, but I don't have a clue what to do about certain jest taunts. So I'm looking for help.

const someData = jest.fn();
jest.spyOn(window, "fetch").mockImplementation(url => {
  switch(url) {
    case: "someUrl":
      return someData();
    default: wantMsw; // <- I'd like to work on this part to msw 
  }
});
...
expect(someData).toHaveBeenCalledTimes(1);

I'm originally using msw, so i don't have to mock fetch
But I'm inevitably mokcing fetch because I'm currently couting the numbers that certain url called,

However, since there is no need to mock all api, I would like to delegate the task to the handler of msw again in the default value of switch Will it be possible ?