From 6d82171683031b8847975daa2b1408693ad3aaeb Mon Sep 17 00:00:00 2001
From: "Dustin J. Mitchell" <dustin@buildbot.net>
Date: Sun, 14 Dec 2014 12:59:59 -0500
Subject: [PATCH] when listdir returns no files, clone

Fixes #3112.
---
 master/buildbot/steps/source/git.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/master/buildbot/steps/source/git.py b/master/buildbot/steps/source/git.py
index 97801956f9e..48748ae1a1d 100644
--- a/master/buildbot/steps/source/git.py
+++ b/master/buildbot/steps/source/git.py
@@ -577,6 +577,9 @@ def checkWithPathExists(exists):
             d = self.runCommand(cmd)
 
             def checkWithListdir(_):
+                if 'files' not in cmd.updates:
+                    # no files - directory doesn't exist
+                    return "clone"
                 files = cmd.updates['files'][0]
                 if '.git' in files:
                     return "update"