How to type hint kwargs when they are passed as is to another function?

Suppose I have a fully type hinted method with only keyword arguments :

class A:
    def func(a: int, b: str, c: SomeIntricateTypeHint) -> OutputClass:
        ...

Now suppose I have a function that takes in variable keyword arguments, and passes them entirely onto that method :

def outer_func(n_repeat: int, **kwargs: ???) -> OtherOutputClass:
    a = A()
    for _ in range(n_repeat):
        a.func(**kwargs)

In doing so, I have lost the benefits of the type hints for func. How do I type hint kwargs in outer_func such that I recover those benefits ?

For extra detail, in my case, I don't personally define func. It's actually a method from a boto3 client object. As a result I'm looking for a solution that dynamically creates the type hint, rather than having to manually create the TypedDict.