diff --git a/.github/actions/diff-js-api-changes/action.yml b/.github/actions/diff-js-api-changes/action.yml
index 9e186d27cc0113..6e99b1bcb7b5bd 100644
--- a/.github/actions/diff-js-api-changes/action.yml
+++ b/.github/actions/diff-js-api-changes/action.yml
@@ -3,22 +3,25 @@ description: Check for breaking changes in the public React Native JS API
 runs:
   using: composite
   steps:
-    - name: Compute merge base with main
+    - name: Fetch PR and main, compute merge base
       id: merge_base
       shell: bash
       run: |
         git fetch origin main
-        git fetch --deepen=500
-        echo "merge_base=$(git merge-base HEAD origin/main)" >> $GITHUB_OUTPUT
+        git fetch origin ${{ github.event.pull_request.head.sha }} --depth=500
+        echo "merge_base=$(git merge-base ${{ github.event.pull_request.head.sha }} origin/main)" >> $GITHUB_OUTPUT
 
-    - name: Output snapshot before state for comparison
+    - name: Extract before and after API snapshots
       shell: bash
       env:
         SCRATCH_DIR: ${{ runner.temp }}/diff-js-api-changes
       run: |
+        rm -rf $SCRATCH_DIR
         mkdir -p $SCRATCH_DIR
         git show ${{ steps.merge_base.outputs.merge_base }}:packages/react-native/ReactNativeApi.d.ts > $SCRATCH_DIR/ReactNativeApi-before.d.ts \
           || echo "" > $SCRATCH_DIR/ReactNativeApi-before.d.ts
+        git show ${{ github.event.pull_request.head.sha }}:packages/react-native/ReactNativeApi.d.ts > $SCRATCH_DIR/ReactNativeApi-after.d.ts \
+          || echo "" > $SCRATCH_DIR/ReactNativeApi-after.d.ts
 
     - name: Run breaking change detection
       shell: bash
@@ -27,5 +30,5 @@ runs:
       run: |
         node ./scripts/js-api/diff-api-snapshot \
           $SCRATCH_DIR/ReactNativeApi-before.d.ts \
-          ./packages/react-native/ReactNativeApi.d.ts \
+          $SCRATCH_DIR/ReactNativeApi-after.d.ts \
           > $SCRATCH_DIR/output.json
diff --git a/.github/workflows/danger-pr.yml b/.github/workflows/danger-pr.yml
index ce41f6f602cdce..25b4d53f4fd684 100644
--- a/.github/workflows/danger-pr.yml
+++ b/.github/workflows/danger-pr.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'facebook/react-native'
     steps:
-      - name: Check out PR branch
+      - name: Check out main branch
         uses: actions/checkout@v6
       - name: Setup Node.js
         uses: ./.github/actions/setup-node