From 57fc32d27927503d8eb379e2907c42933f8732f1 Mon Sep 17 00:00:00 2001
From: Max Howell <max@methylblue.com>
Date: Thu, 5 Nov 2009 23:36:51 +0000
Subject: [PATCH] Solve the brew install, brew rm, brew install problem for
 HEAD formula

The problem was that git checkout -b doesn't work the second time. This simple solution works by never creating a local branch.
---
 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 deb5d1762d..56012e1859 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -150,7 +150,7 @@ class GitDownloadStrategy <AbstractDownloadStrategy
         ohai "Checking out #{@spec} #{@ref}"
         case @spec
         when :branch
-          safe_system 'git', 'checkout', '-b', @ref, "origin/#{@ref}"
+          safe_system 'git', 'checkout', "origin/#{@ref}"
         when :tag
           safe_system 'git', 'checkout', @ref
         end