Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: fluxcd 2.8.2 -> 2.8.3 https://github.com/fluxcd/flux2/releases
attrpath: fluxcd
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] skipping because derivation has updateScript
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/kaalykws9wy854xw9b8c9i0m6k392k3k-packages.json.drv
building '/nix/store/kaalykws9wy854xw9b8c9i0m6k392k3k-packages.json.drv'...

Going to be running update for following packages:
 - fluxcd-2.8.2

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - fluxcd-2.8.2: UPDATING ...
 - fluxcd-2.8.2: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/fl/fluxcd/package.nix b/pkgs/by-name/fl/fluxcd/package.nix
index 4dd8ee49453a..3f742a5b23ce 100644
--- a/pkgs/by-name/fl/fluxcd/package.nix
+++ b/pkgs/by-name/fl/fluxcd/package.nix
@@ -10,10 +10,10 @@
 }:
 
 let
-  version = "2.8.2";
-  srcHash = "sha256-2UBnOtTdYkzHioGUHtAd0vwqpCouk/uaNvYmjmwc4F0=";
-  vendorHash = "sha256-W6Vgvb4pPexHxx7t8IIfBWyC3c5jUr9KxaR8k5QUUpw=";
-  manifestsHash = "sha256-mYIn7tzsKmx9Wx2WCrztyD3IVLI3pF7robv25HPiCx4=";
+  version = "2.8.3";
+  srcHash = "sha256-5bs7atecd7NqUrJySMxOe01zGpTMbgrau5B6QkUTRyg=";
+  vendorHash = "sha256-ICI9Lace4gv2GE/nb9y5yRlvsOkujr2DA2gQ8PnIrIs=";
+  manifestsHash = "sha256-V1rWHu23K4224eiwUuueG2vk3LsdgtvVGZVQG5vBhLQ=";
 
   manifests = fetchzip {
     url = "https://github.com/fluxcd/flux2/releases/download/v${version}/manifests.tar.gz";

No auto update branch exists
There might already be an open PR for this update:
- fluxcd: 2.8.2 -> 2.8.3
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/500409"