{C : Type u₁} →
  [inst : CategoryTheory.Category.{v₁, u₁} C] →
    {J : CategoryTheory.GrothendieckTopology C} →
      {R : CategoryTheory.Sheaf J RingCat} →
        [inst_1 : CategoryTheory.HasWeakSheafify J AddCommGrpCat] →
          [inst_2 : J.WEqualsLocallyBijective AddCommGrpCat] →
            [inst_3 : J.HasSheafCompose (CategoryTheory.forget₂ RingCat AddCommGrpCat)] →
              {I : Type u} → I → (SheafOfModules.free I).sections