diff --git a/lib/updater/git_updater.rb b/lib/updater/git_updater.rb
index 5e591090..0afb4336 100644
--- a/lib/updater/git_updater.rb
+++ b/lib/updater/git_updater.rb
@@ -35,7 +35,7 @@ class GitUpdater < Updater
   end
 
   def has_local_changes?
-    %x[git diff --exit-code 2>&1] =~ /diff/ ? true : false
+    %x[git #{repo_directory_arguments()} diff --exit-code 2>&1] =~ /diff/ ? true : false
   end
 
   def reset_head
diff --git a/spec/lib/updater/git_updater_spec.rb b/spec/lib/updater/git_updater_spec.rb
index c1fc9ae5..0a326158 100644
--- a/spec/lib/updater/git_updater_spec.rb
+++ b/spec/lib/updater/git_updater_spec.rb
@@ -47,7 +47,7 @@ describe GitUpdater do
 
   describe "#has_local_changes?" do
     after :each do
-      stub_system_command(@git_updater, /^git diff --exit-code 2>&1/, @stub_value)
+      stub_system_command(@git_updater, /^git .* diff --exit-code 2>&1/, @stub_value)
       @git_updater.has_local_changes?.should === @expected
     end