Multiple inheritance from library in C++ with ambiguity

Let’s say I have the following situation

// in library
class A {
    void foo();
}

class B: public A {}

// own program
class MyBaseClass: public A {}

class MyTypicalClass: public MyBaseClass {}

class SpecialCaseClass: public virtual MyBaseClass, public virtual B {}

Usually I don’t need features defined in B and it comes with some overhead I want to avoid in MyTypicalClass. For the SpecialCaseClass I want properties defined in MyBaseClass and in B. I get the error: error: request for member ‘foo’ is ambiguous, because I inherit from A twice. Is there an elegant way I can take everything ambiguous from B‘s A instead of the A of MyBaseClass?