{C : Type u} →
  [inst : CategoryTheory.Category.{v, u} C] →
    {I J : C} →
      {f : I ⟶ J} →
        [inst_1 : CategoryTheory.ChosenPullbacksAlong f] →
          [CategoryTheory.ExponentiableMorphism f] → CategoryTheory.ExponentiableMorphism (CategoryTheory.Over.mk f).hom