hyprlandPlugins.hyprsplit: fix build

Assisted-by: codex with gpt-5.6-sol-high

pkgs/applications/window-managers/hyprwm/hyprland-plugins/hyprsplit.nix

@@ -8,13 +8,13 @@
 }:
 mkHyprlandPlugin (finalAttrs: {
   pluginName = "hyprsplit";
-  version = "0.54.2";
+  version = "0.54.3-unstable-2026-06-11";
 
   src = fetchFromGitHub {
     owner = "shezdy";
     repo = "hyprsplit";
-    tag = "v${finalAttrs.version}";
-    hash = "sha256-NFMLZmM6lM7v6WFcewOp7pKPlr6ampX/MB/kGxt/gPE=";
+    rev = "6b00b677d8905fb38779c91e12d6294e0e586a44";
+    hash = "sha256-PaoUtmk+qIP/ESdxkxnY7mUMpMHjix88qu22R5GLQqE=";
   };
 
   nativeBuildInputs = [
@@ -22,7 +22,7 @@ mkHyprlandPlugin (finalAttrs: {
     ninja
   ];
 
-  passthru.updateScript = nix-update-script { };
+  passthru.updateScript = nix-update-script { extraArgs = [ "--version=branch" ]; };
 
   meta = {
     homepage = "https://github.com/shezdy/hyprsplit";