cache it to the max

.gitea/workflows/deploy.yml

@@ -11,9 +11,26 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
         with:
-          submodules: true
+          submodules: false  # Don't fetch submodules yet
           fetch-depth: 0
 
+      # Cache the submodule content
+      - name: Cache submodules
+        id: cache-submodules
+        uses: actions/cache@v3
+        with:
+          path: |
+            .git/modules
+            themes/blowfish
+          key: ${{ runner.os }}-submodules-${{ hashFiles('.gitmodules') }}
+          restore-keys: |
+            ${{ runner.os }}-submodules-
+
+      # Initialize submodules if cache miss
+      - name: Initialize submodules
+        if: steps.cache-submodules.outputs.cache-hit != 'true'
+        run: git submodule update --init --recursive
+
       # Cache Hugo dependencies and modules
       - name: Cache Hugo dependencies
         uses: actions/cache@v3