Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: apacheKafka_3_9 0 -> 1
attrpath: apacheKafka_3_9
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/7irv7yiqmdkjlgzgrd7syqss7y5zny9q-packages.json.drv
building '/nix/store/7irv7yiqmdkjlgzgrd7syqss7y5zny9q-packages.json.drv'...

Going to be running update for following packages:
 - apache-kafka-2.13-3.9.1

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - apache-kafka-2.13-3.9.1: UPDATING ...
 - apache-kafka-2.13-3.9.1: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/servers/apache-kafka/3_9.nix b/pkgs/servers/apache-kafka/3_9.nix
index ecd0ed75f784..e59ccd11df23 100644
--- a/pkgs/servers/apache-kafka/3_9.nix
+++ b/pkgs/servers/apache-kafka/3_9.nix
@@ -1,5 +1,5 @@
 import ./generic.nix {
-  kafkaVersion = "3.9.1";
+  kafkaVersion = "3.9.2";
   scalaVersion = "2.13";
-  hash = "sha256-3UOZgW5niUbKt2470WhhA1VeabyPKrhobNpxqhW8MaM=";
+  hash = "sha256-1dlRwiSE+aCQiwVWO8gKBC3pd53x4GqJ930nzrX2gyM=";
 }

No auto update branch exists
Old version 2.13-3.9.1" not present in master derivation file with contents: import ./generic.nix {
  kafkaVersion = "3.9.1";
  scalaVersion = "2.13";
  hash = "sha256-3UOZgW5niUbKt2470WhhA1VeabyPKrhobNpxqhW8MaM=";
}