Don't remote fetch the git repository if the commit is available locally

2 files changed, 19 insertions, 0 deletions

diff --git a/lib/bundler/source.rb b/lib/bundler/source.rb
index 404b3925d2..e765c47628 100644
--- a/lib/bundler/source.rb
+++ b/lib/bundler/source.rb
@@ -595,6 +595,7 @@ module Bundler
 
       def cache
         if cached?
+          return if has_revision_cached?
           Bundler.ui.info "Updating #{uri}"
           in_cache { git %|fetch --force --quiet "#{uri}" refs/heads/*:refs/heads/*| }
         else
@@ -620,6 +621,12 @@ module Bundler
         end
       end
 
+      def has_revision_cached?
+        return unless @revision
+        git %|cat-file -t #{@revision}|
+        $? == 0
+      end
+
       def revision
         @revision ||= in_cache { git("rev-parse #{ref}").strip }
       end
diff --git a/spec/install/git_spec.rb b/spec/install/git_spec.rb
index afa57254f1..a8ba290c83 100644
--- a/spec/install/git_spec.rb
+++ b/spec/install/git_spec.rb
@@ -386,4 +386,16 @@ describe "bundle install with git sources" do
     out.should == "WIN"
   end
 
+  it "does not to a remote fetch if the revision is cached locally" do
+    build_git "foo"
+
+    install_gemfile <<-G
+      gem "foo", :git => "#{lib_path('foo-1.0')}"
+    G
+
+    FileUtils.rm_rf(lib_path('foo-1.0'))
+
+    bundle "install"
+    out.should_not =~ /updating/i
+  end
 end