Updating Commerce Kickstart’s Contrib Modules
First, you need to understand that Commerce Kickstart is a Distribution. So your goal is to learn how to update a Drupal distribution before their official release.

For the most part you would need to understand how Drupal Make works. Where is a great article ( Maintaining your installed Drupal distro.) that would explain you how to maintain Drupal distributions.

If you successfully was able to update your Drupal distribution (commerce_kickstart) using Drupal Make. You should created a patch and provide that patch to the commerce_kickstart issue queue.