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

1 files changed, 7 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