lib/danger/request_sources/github/github.rb in danger-4.3.2 vs lib/danger/request_sources/github/github.rb in danger-4.3.3

@@ -414,12 +414,22 @@
       rescue
         nil
       end
 
       # @return [String] A URL to the specific file, ready to be downloaded
-      def file_url(organisation: nil, repository: nil, branch: "master", path: nil)
+      def file_url(organisation: nil, repository: nil, branch: nil, path: nil)
         organisation ||= self.organisation
-        "https://raw.githubusercontent.com/#{organisation}/#{repository}/#{branch}/#{path}"
+
+        return @download_url unless @download_url.nil?
+        begin
+          # Retrieve the download URL (default branch on nil param)
+          contents = client.contents("#{organisation}/#{repository}", path: path, ref: branch)
+          @download_url = contents["download_url"]
+        rescue Octokit::ClientError
+          # Fallback to github.com
+          branch ||= "master"
+          @download_url = "https://raw.githubusercontent.com/#{organisation}/#{repository}/#{branch}/#{path}"
+        end
       end
     end
   end
 end