feat(gha): remove redundant sha lookup (#2279)

.github/workflows/deploy-pr.yml

@@ -99,16 +99,6 @@ jobs:
       - name: Checkout repo
         uses: actions/checkout@v4
 
-      - name: Get PR last commit SHA
-        run: |
-          PR_DATA=$(curl -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
-                  -H "Accept: application/vnd.github.v3+json" \
-                  "https://api.github.com/repos/${{ github.repository }}/pulls/${{ needs.build.outputs.pr_number }}")
-          LAST_COMMIT_SHA=$(echo "$PR_DATA" | jq -r .head.sha)
-          echo "LAST_COMMIT_SHA=$LAST_COMMIT_SHA" >> $GITHUB_ENV
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
       - name: Comment PR
         run: |
           PREVIEW_URL=${{ needs.build.outputs.url }}
@@ -123,7 +113,7 @@ jobs:
             STATUS_MESSAGE="Build failed!"
           fi
 
-          COMMENT_BODY="Deploying with ⚡ Cloudflare Pages<br><table><tr><td><strong>Latest commit:</strong></td><td><code>$LAST_COMMIT_SHA</code></td></tr><tr><td><strong>Status:</strong></td><td>&nbsp;$STATUS_EMOJI&nbsp; $STATUS_MESSAGE</td></tr><tr><td><strong>Preview URL:</strong></td><td><a href='$PREVIEW_URL'>$PREVIEW_URL</a></td></tr><tr><td><strong>Branch Preview URL:</strong></td><td><a href='$BRANCH_PREVIEW_URL'>$BRANCH_PREVIEW_URL</a></td></tr></table>"
+          COMMENT_BODY="Deploying with ⚡ Cloudflare Pages<br><table><tr><td><strong>Latest commit:</strong></td><td><code>${{ needs.build.outputs.pr_sha }}</code></td></tr><tr><td><strong>Status:</strong></td><td>&nbsp;$STATUS_EMOJI&nbsp; $STATUS_MESSAGE</td></tr><tr><td><strong>Preview URL:</strong></td><td><a href='$PREVIEW_URL'>$PREVIEW_URL</a></td></tr><tr><td><strong>Branch Preview URL:</strong></td><td><a href='$BRANCH_PREVIEW_URL'>$BRANCH_PREVIEW_URL</a></td></tr></table>"
 
           ESCAPED_BODY=$(echo "$COMMENT_BODY" | jq -aRs .)
           COMMENTS_URL="https://api.github.com/repos/${{ github.repository }}/issues/${{ needs.build.outputs.pr_number }}/comments"