python311Packages.bugz 0 -> 1
attrpath: python311Packages.bugz
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/awha5y718x5yrl5h8pzpvizdxaavksqb-packages.json.drv
building '/nix/store/awha5y718x5yrl5h8pzpvizdxaavksqb-packages.json.drv'...

Going to be running update for following packages:
 - python3.11-bugz-0.9.3-0.13

Press Enter key to continue...
Running update for:
 - python3.11-bugz-0.9.3-0.13: UPDATING ...
 - python3.11-bugz-0.9.3-0.13: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/development/python-modules/bugz/default.nix b/pkgs/development/python-modules/bugz/default.nix
index f67be664c227..fb4acc93c77c 100644
--- a/pkgs/development/python-modules/bugz/default.nix
+++ b/pkgs/development/python-modules/bugz/default.nix
@@ -5,13 +5,13 @@
 
 buildPythonPackage {
   pname = "bugz-0.9.3";
-  version = "0.13";
+  version = "0.14";
 
   src = fetchFromGitHub {
     owner = "williamh";
     repo = "pybugz";
-    rev = "0.13";
-    sha256 = "1nw07q7r078dp82rcrhvvnhmnaqjx6f8a6cdjgrsiy6fryrx9dwz";
+    rev = "refs/tags/${version}";
+    sha256 = "sha256-rhiCQPSh987QEM4aMd3R/7e6l+pm2eJDE7f5LckIuho=";
   };
 
   doCheck = false;

The derivation has no 'version' attribute, so do not know how to figure out the version while doing an updateScript update