Ensures that local git config is used while checking if it is a Git-svn repo.

git_cl.py

Index: git_cl.py
diff --git a/git_cl.py b/git_cl.py
index 64cd9e86f091e00d0201b242187930fd393de70b..b09842d6ff245bc2ea7b369941f00b6ce58eb36b 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -278,7 +278,7 @@ class Settings(object):
     if self.is_git_svn is None:
       # If you have any "svn-remote.*" config keys, we think you're using svn.
       self.is_git_svn = RunGitWithCode(
-          ['config', '--get-regexp', r'^svn-remote\.'])[0] == 0
+          ['config', '--local', '--get-regexp', r'^svn-remote\.'])[0] == 0
     return self.is_git_svn
 
   def GetSVNBranch(self):