From abd659875dacf6521949119d892644b8e3b5ed4c Mon Sep 17 00:00:00 2001
From: Kamran Ayub <kamran@hey.com>
Date: Sun, 5 Jul 2020 19:52:50 -0500
Subject: [PATCH] Fix gh sha

---
 index.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index ccc4c8db..d748bf37 100644
--- a/index.js
+++ b/index.js
@@ -27,7 +27,11 @@ const waitForUrl = async (url, MAX_TIMEOUT) => {
 const run = async () => {
   try {
     const netlifyToken = process.env.NETLIFY_TOKEN;
-    const commitSha = github.context.sha;
+    // In a PR, github.contex.sha refers to the last merge commit SHA
+    // not the *latest commit* of the PR which is what Netlify uses. Instead,
+    // have to use github.context.event.pull_request.head.sha
+    // See: https://docs.github.com/en/developers/webhooks-and-events/webhook-events-and-payloads#pull_request
+    const commitSha = github.context.event.pull_request.head.sha;
     const MAX_TIMEOUT = Number(core.getInput("max_timeout")) || 60;
     const siteName = core.getInput("site_name");
     if (!netlifyToken) {