Fix branch existence check so it only calls git contains once

2 files changed, 7 insertions, 1 deletions

diff --git a/lib/github/import.rb b/lib/github/import.rb
index 9c7eb965f93..9f371378b63 100644
--- a/lib/github/import.rb
+++ b/lib/github/import.rb
@@ -336,6 +336,8 @@ module Github
 
     def restore_target_branch(pull_request)
       repository.create_branch(pull_request.target_branch_name, pull_request.target_branch_sha)
+
+      pull_request.target_branch.confirm_branch_existence
     end
 
     def remove_branch(name)
diff --git a/lib/github/representation/branch.rb b/lib/github/representation/branch.rb
index d1dac6944f0..da04a9beedb 100644
--- a/lib/github/representation/branch.rb
+++ b/lib/github/representation/branch.rb
@@ -26,7 +26,11 @@ module Github
       end
 
       def exists?
-        branch_exists? && commit_exists?
+        @exists ||= branch_exists? && commit_exists?
+      end
+
+      def confirm_branch_existence
+        @exists = commit_exists?
       end
 
       def valid?