File project.diff of Package ocaml-csexp

--- ocaml-csexp.spec.orig
+++ ocaml-csexp.spec
@@ -1,5 +1,5 @@
 #
-# spec file for package ocaml-csexp
+# spec file
 #
 # Copyright (c) 2023 SUSE LLC
 #
@@ -35,7 +35,7 @@ Release:        0
 Summary:        Parsing and printing of S-expressions in Canonical form
 License:        MIT
 Group:          Development/Languages/OCaml
-BuildRoot:      %_tmppath/%name-%version-build
+BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 URL:            https://opam.ocaml.org/packages/csexp
 Source0:        %pkg-%version.tar.xz
 BuildRequires:  ocaml