I have used Jira at several place, and every time that it worked fine Jira was the source of thruth for the project. There was no shadow tracking beside it. So everybody updated it happily and used it.
You can't do that based of the code because the code is limited to its content. How do you track everything that isn't in it ? (requirements, relation with other teams, delivery to customer, customer tickets,...)
You can't do that based of the code because the code is limited to its content. How do you track everything that isn't in it ? (requirements, relation with other teams, delivery to customer, customer tickets,...)