Support commit hash checkouts in setup-flutter

setup-flutter/action.yml

@@ -2,7 +2,7 @@ name: 'Setup Flutter'
 description: 'Cross-platform setup for Flutter with caching on macOS, Windows, and Linux.'
 inputs:
   version:
-    description: 'Flutter channel or version tag (e.g., master, stable, 3.29.0)'
+    description: 'Flutter channel, version tag, or commit hash (e.g., master, stable, 3.29.0, 4ebf37fe7df0a130ba5bee17315b98f905c10b34)'
     required: false
     default: 'master'
   mirror_url:
@@ -61,14 +61,22 @@ runs:
         fi
 
         if [ ! -d "$SDK_DIR/.git" ] || [ ! -f "$SDK_DIR/bin/flutter" ]; then
-          echo "Cloning Flutter ${{ inputs.version }} from $CLONE_URL to $SDK_DIR..."
+          echo "Cloning Flutter SDK to $SDK_DIR..."
           rm -rf "$SDK_DIR"
-          git clone --depth 1 --branch ${{ inputs.version }} "$CLONE_URL" "$SDK_DIR" || {
+          git clone "$CLONE_URL" "$SDK_DIR" || {
             echo "Failed to clone from mirror, falling back to GitHub..."
-            git clone --depth 1 --branch ${{ inputs.version }} https://github.com/flutter/flutter.git "$SDK_DIR"
+            git clone https://github.com/flutter/flutter.git "$SDK_DIR"
           }
+          git -C "$SDK_DIR" checkout "${{ inputs.version }}"
         else
-          echo "Flutter SDK already present at $SDK_DIR. Ready to use."
+          CURRENT_COMMIT=$(git -C "$SDK_DIR" rev-parse HEAD 2>/dev/null || true)
+          if [ "$CURRENT_COMMIT" != "${{ inputs.version }}" ] && [ "${{ inputs.version }}" != "master" ]; then
+            echo "Checking out Flutter ${{ inputs.version }}..."
+            git -C "$SDK_DIR" fetch origin "${{ inputs.version }}" --depth=1 2>/dev/null || git -C "$SDK_DIR" fetch origin
+            git -C "$SDK_DIR" checkout "${{ inputs.version }}"
+          else
+            echo "Flutter SDK already at ${{ inputs.version }}. Ready to use."
+          fi
         fi
 
         rm -rf "$LOCK_DIR" || true
@@ -97,15 +105,23 @@ runs:
         }
 
         if (-not (Test-Path "$sdkDir\bin\flutter.bat")) {
-          echo "Cloning Flutter ${{ inputs.version }} from $cloneUrl to $sdkDir..."
+          echo "Cloning Flutter SDK to $sdkDir..."
           try {
-            git clone --depth 1 --branch ${{ inputs.version }} $cloneUrl $sdkDir
+            git clone $cloneUrl $sdkDir
           } catch {
             echo "Failed to clone from mirror, falling back to GitHub..."
-            git clone --depth 1 --branch ${{ inputs.version }} https://github.com/flutter/flutter.git $sdkDir
+            git clone https://github.com/flutter/flutter.git $sdkDir
           }
+          git -C $sdkDir checkout "${{ inputs.version }}"
         } else {
-          echo "Flutter SDK already present at $sdkDir. Ready to use."
+          $currentCommit = git -C $sdkDir rev-parse HEAD 2>$null
+          if ($currentCommit -ne "${{ inputs.version }}" -and "${{ inputs.version }}" -ne "master") {
+            echo "Checking out Flutter ${{ inputs.version }}..."
+            git -C $sdkDir fetch origin
+            git -C $sdkDir checkout "${{ inputs.version }}"
+          } else {
+            echo "Flutter SDK already at ${{ inputs.version }}. Ready to use."
+          }
         }
 
         if (Test-Path $lockDir) {