∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.Limits.HasPullbacks C] {A B : C}
  (f : A ⟶ B) [inst_2 : CategoryTheory.Mono f],
  CategoryTheory.CategoryStruct.comp (CategoryTheory.Limits.pullback.lift ⊤.arrow ⊤.arrow ⋯)
      (CategoryTheory.Limits.pullback.snd ((CategoryTheory.MonoOver.forget B).obj (CategoryTheory.MonoOver.mk f)).hom
        ((CategoryTheory.MonoOver.forget B).obj (CategoryTheory.MonoOver.mk f)).hom) =
    ⊤.arrow