diff --git a/.github/workflows/backend-ci.yml b/.github/workflows/backend-ci.yml
index 1d9b44e..36c898c 100644
--- a/.github/workflows/backend-ci.yml
+++ b/.github/workflows/backend-ci.yml
@@ -11,10 +11,17 @@ jobs:
     runs-on: self-hosted
 
     steps:
-      - name: Checkout repository
+      - name: Clean GitHub Actions workspace manually (force clean)
+        run: |
+          sudo rm -rf $GITHUB_WORKSPACE/*
+
+      - name: Checkout repository without submodules
         uses: actions/checkout@v2
         with:
-          submodules: false  # 🚫 Don't check submodules to avoid .gitmodules error
+          submodules: false
+          clean: true
+          fetch-depth: 0
+          persist-credentials: false
 
       - name: Set up Python
         uses: actions/setup-python@v2
@@ -37,10 +44,17 @@ jobs:
     needs: lint
 
     steps:
-      - name: Checkout repository
+      - name: Clean GitHub Actions workspace manually (force clean)
+        run: |
+          sudo rm -rf $GITHUB_WORKSPACE/*
+
+      - name: Checkout repository without submodules
         uses: actions/checkout@v2
         with:
-          submodules: false 
+          submodules: false
+          clean: true
+          fetch-depth: 0
+          persist-credentials: false
 
       - name: Set up Python
         uses: actions/setup-python@v2
@@ -96,10 +110,13 @@ jobs:
     needs: lint
 
     steps:
-      - name: Checkout repository
+      - name: Checkout repository without submodules
         uses: actions/checkout@v2
         with:
-          submodules: false  
+          submodules: false
+          clean: true
+          fetch-depth: 0
+          persist-credentials: false
 
       - name: Set up Node.js
         uses: actions/setup-node@v3