diff --git a/.github/workflows/merge-develop.yml b/.github/workflows/merge-develop.yml
index 777196b..bf7be54 100644
--- a/.github/workflows/merge-develop.yml
+++ b/.github/workflows/merge-develop.yml
@@ -48,9 +48,13 @@ jobs:
         if: steps.diff.outputs.has_changes == 'true'
         run: npm ci
 
-      - name: Checkout docs/ from main (빌드용 콘텐츠)
+      - name: Checkout docs/ from main (빌드용 콘텐츠 완전 교체)
         if: steps.diff.outputs.has_changes == 'true'
-        run: git checkout origin/main -- docs/ blog/ static/img/
+        # rm -rf 없이 git checkout만 하면 develop에만 있고 main엔 없는 파일이 그대로 남아,
+        # 옛 콘텐츠가 새 authors.yml·sidebar와 충돌해 빌드 게이트가 깨진다.
+        run: |
+          rm -rf docs blog static/img
+          git checkout origin/main -- docs blog static/img
 
       - name: Build gate
         if: steps.diff.outputs.has_changes == 'true'
diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index fba684b..b5a21d3 100644
--- a/.github/workflows/pr-build.yml
+++ b/.github/workflows/pr-build.yml
@@ -26,10 +26,13 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Checkout docs/ from main (콘텐츠는 main에서 관리됨)
+      - name: Checkout docs/ from main (콘텐츠 완전 교체)
+        # rm -rf 없이 git checkout만 하면 PR 브랜치에만 있고 main엔 없는 파일이 그대로 남아,
+        # 옛 콘텐츠가 새 authors.yml·sidebar와 충돌해 빌드 게이트가 깨진다.
         run: |
           git fetch origin main
-          git checkout origin/main -- docs/ blog/ static/img/
+          rm -rf docs blog static/img
+          git checkout origin/main -- docs blog static/img
 
       - name: Setup Node.js
         uses: actions/setup-node@v4