add self managed group

patch.yml

@@ -37,6 +37,9 @@
 #
 # override_required: Requires the rocky-release override package to fake "rhel"
 #                    as an ID to build properly. Usually only needed for dotnet
+#
+# self_managed: These packages are managed by the team directly and are likely not
+#               going to match upstream.
 ---
 build_patch:
   all:
@@ -162,6 +165,11 @@ override_required:
 spec_change_only:
   all:
     - cockpit
+self_managed:
+  all:
+    - shim
+    - shim-unsigned-aarch64
+    - shim-unsigned-x64
 # Version specific, does not indicate branch names.
 debrand:
   r8: