From 3d39107f2df391e5519409801efdb9be8a8e25c3 Mon Sep 17 00:00:00 2001
From: Sean Brogan <sean.brogan@microsoft.com>
Date: Tue, 24 Nov 2020 13:12:30 -0800
Subject: [PATCH] .azurepipelines/templates/platform-build-run-steps.yml: Fetch
 target branch

Update Platform build steps process to fetch target branch

Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Sean Brogan <sean.brogan@microsoft.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
---
 .azurepipelines/templates/platform-build-run-steps.yml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.azurepipelines/templates/platform-build-run-steps.yml b/.azurepipelines/templates/platform-build-run-steps.yml
index ebf674bfc7..97e7faa266 100644
--- a/.azurepipelines/templates/platform-build-run-steps.yml
+++ b/.azurepipelines/templates/platform-build-run-steps.yml
@@ -51,6 +51,12 @@ steps:
 # Set default
 - bash: echo "##vso[task.setvariable variable=pkg_count]${{ 1 }}"
 
+# Fetch the target branch so that pr_eval can diff them.
+# Seems like azure pipelines/github changed checkout process in nov 2020.
+- script: git fetch origin $(System.PullRequest.targetBranch)
+  displayName: fetch target branch
+  condition: eq(variables['Build.Reason'], 'PullRequest')
+
 # trim the package list if this is a PR
 - task: CmdLine@1
   displayName: Check if ${{ parameters.build_pkg }} need testing