jest.mock("./MyService");
class MyService{
    async f1(args) {
        let out= await this.f2(args);
        ...
    }
}
...
// my test code:
MyService.f1.mockResolvedValueOnce([]);
await OtherService.f3(); // f1 is mocked and called in f3 and returns [] (everything is fine)
MyService.f1.mockRestore(); // trying to forget mocking f1 and getting the original behavior
MyService.f2.mockResolvedValueOnce([some data]); // I want original f1 to be called and mock the inner f2 but f1 is never called and I get undefined output from it

I'm trying to mock MyService's functions only occasionally and after using the mocked version, forget that mocking and get the original behavior of them. But when I do it for once and restore that mock, I get undefined for the output of the mocked function and it's actually never called.