no goals
J : Type w
C : Type u
inst✝² : Category C
D : Type u_1
inst✝¹ : Category D
B : D
objs : J → D
arrows : (j : J) → B ⟶ objs j
inst✝ : HasWidePushout B objs arrows
j : J
⊢ arrows j ≫ ι arrows j = head arrows
apply colimit.w (WidePushoutShape.wideSpan _ _ _) (WidePushoutShape.Hom.init j)