Fix old commit

Author: hishamco

.github/workflows/update-submodule.yml

@@ -24,8 +24,11 @@ jobs:
           $line = (git submodule status --recursive | Select-Object -First 1).Trim()
           $parts = $line -split '\s+'
           $path = $parts[1]
-          $hash = (git rev-parse HEAD:$path)
-          "hash=$hash" >> $env:GITHUB_OUTPUT
+      
+          $treeLine = (git ls-tree HEAD -- $path).Trim()
+          $oldHash = ($treeLine -split '\s+')[2]
+      
+          "hash=$oldHash" >> $env:GITHUB_OUTPUT
           "path=$path" >> $env:GITHUB_OUTPUT
 
       - name: Update submodules