From a119d2eb06e0b7d7fdfd97fc725bfbcf6594f9e1 Mon Sep 17 00:00:00 2001
From: Paul Kehrer <paul.l.kehrer@gmail.com>
Date: Tue, 23 May 2017 22:02:50 -0700
Subject: master builds should use the commit at the time it was merged (#3577)

---
 Jenkinsfile | 39 ++++++++++++++++++++++++++++-----------
 1 file changed, 28 insertions(+), 11 deletions(-)

diff --git a/Jenkinsfile b/Jenkinsfile
index 7693d1af..adaf9f03 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -144,22 +144,39 @@ def checkout_git(label) {
         cd cryptography
         git fetch origin +refs/pull/${env.CHANGE_ID}/merge:
         git checkout -qf FETCH_HEAD
-        git rev-parse HEAD
         """
+        if (label.contains("windows")) {
+            bat script
+        } else {
+            sh """#!/bin/sh
+                set -xe
+                ${script}
+            """
+        }
     } else {
-        script = """
-        git clone --depth=1 https://github.com/pyca/cryptography.git cryptography
-        cd cryptography
-        git checkout ${env.BRANCH_NAME}
-        git rev-parse HEAD
-        """
+        checkout([
+            $class: 'GitSCM',
+            branches: [[name: "*/${env.BRANCH_NAME}"]],
+            doGenerateSubmoduleConfigurations: false,
+            extensions: [[
+                $class: 'RelativeTargetDirectory',
+                relativeTargetDir: 'cryptography'
+            ]],
+            submoduleCfg: [],
+            userRemoteConfigs: [[
+                'url': 'https://github.com/pyca/cryptography'
+            ]]
+        ])
     }
     if (label.contains("windows")) {
-        bat script
+        bat """
+            cd cryptography
+            git rev-parse HEAD
+        """
     } else {
-        sh """#!/bin/sh
-        set -xe
-        ${script}
+        sh """
+            cd cryptography
+            git rev-parse HEAD
         """
     }
 }
-- 
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