From b88a623a9f79414e8375e813d50ce6c92f9c1f8c Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Thu, 28 Nov 2019 09:56:14 +0000
Subject: [PATCH] Handle pull request branch

---
 contrib/msi/build-msi.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/contrib/msi/build-msi.sh b/contrib/msi/build-msi.sh
index de459e5..aecd034 100644
--- a/contrib/msi/build-msi.sh
+++ b/contrib/msi/build-msi.sh
@@ -9,7 +9,11 @@ then
 fi
 
 # Get the rest of the repository history
-if [ "${APPVEYOR_REPO_BRANCH}" != "" ];
+if [ "${APPVEYOR_PULL_REQUEST_HEAD_REPO_BRANCH}" != "" ];
+then
+  git fetch --all
+  git checkout ${APPVEYOR_PULL_REQUEST_HEAD_REPO_BRANCH}
+elif [ "${APPVEYOR_REPO_BRANCH}" != "" ];
 then
   git fetch --all
   git checkout ${APPVEYOR_REPO_BRANCH}