From e91f359a56f8c798a35df06ab028af85ee423ddf Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Sun, 15 Jun 2014 23:31:58 -0500
Subject: [PATCH] Remove an unnecessary use of ARGV.build_head?

---
 Library/Homebrew/download_strategy.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index 646c08c18c..cee9f9bec5 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -364,7 +364,7 @@ end
 
 class SubversionDownloadStrategy < VCSDownloadStrategy
   def cache_tag
-    ARGV.build_head? ? "svn-HEAD" : "svn"
+    resource.version.head? ? "svn-HEAD" : "svn"
   end
 
   def repo_valid?