I can not commit a change:
$ git commit error: invalid object 100644 13da9eeff5a9150cf2135aaed4d2e337f97b8114 for \'spec/routing/splits_routing_spec.rb\' err
Easy work around solution, if you're not really concerned on the track of the file, you can duplicate the file and remove the original, commit first the deletion and addition, then rename to original again.
Git should build back again normally