Fix PR commit parsing

Signed-off-by: Shreeya Patel <spatel@ciq.com>

Author: shreeya-patel98

.github/workflows/kernel-build-and-test-x86_64.yml

@@ -378,22 +378,18 @@ jobs:
 
         if [ "$COMMIT_COUNT" -eq "1" ]; then
           # Single commit: use commit subject
-          COMMIT_SUBJECT=$(git log -1 --pretty=%s)
+          git log -1 --pretty=%s > /tmp/commit_subject.txt
+          COMMIT_SUBJECT=$(cat /tmp/commit_subject.txt)
           echo "commit_subject=$COMMIT_SUBJECT" >> $GITHUB_OUTPUT
 
-          COMMIT_MSG=$(git log -1 --pretty=%B)
-          echo "commit_message<<EOF" >> $GITHUB_OUTPUT
-          echo "$COMMIT_MSG" >> $GITHUB_OUTPUT
-          echo "EOF" >> $GITHUB_OUTPUT
+          # Save full commit message to file
+          git log -1 --pretty=%B > /tmp/commit_message.txt
         else
           # Multiple commits: create summary
           echo "commit_subject=Multiple patches tested ($COMMIT_COUNT commits)" >> $GITHUB_OUTPUT
 
-          # Get all commit messages
-          ALL_COMMITS=$(git log origin/$BASE_BRANCH..HEAD --pretty=format:"### %s%n%n%b%n---")
-          echo "commit_message<<EOF" >> $GITHUB_OUTPUT
-          echo "$ALL_COMMITS" >> $GITHUB_OUTPUT
-          echo "EOF" >> $GITHUB_OUTPUT
+          # Get all commit messages and save to file
+          git log origin/$BASE_BRANCH..HEAD --pretty=format:"### %s%n%n%b%n---" > /tmp/commit_message.txt
         fi
 
     - name: Create Pull Request
@@ -439,14 +435,16 @@ jobs:
         fi
 
         # Create PR body
-        cat > pr_body.md << EOF
+        cat > pr_body.md << 'PRBODY'
         ## Summary
         This PR has been automatically created after successful completion of all CI stages.
 
         ## Commit Message(s)
-        \`\`\`
-        ${{ steps.commit_msg.outputs.commit_message }}
-        \`\`\`
+        ```
+PRBODY
+        cat /tmp/commit_message.txt >> pr_body.md
+        cat >> pr_body.md << 'PRBODY'
+        ```
 
         ## Test Results
 
@@ -470,7 +468,7 @@ jobs:
         ---
         🤖 This PR was automatically generated by GitHub Actions
         Run ID: ${{ github.run_id }}
-        EOF
+PRBODY
 
         # Check if PR already exists
         EXISTING_PR=$(gh pr list --head "${{ github.ref_name }}" --base "$BASE_BRANCH" --json number --jq '.[0].number' || echo "")