SrcControl is a new form of package management system. It doesn't have any centralized package repository and packages don't have the actual data for the program it installs. What a package, or "source package", contains is information in order to locate and properly download, extract, configure, compile, and install the newest version from the Internet.
At one point, Open Hub analyzed source code for this project based on code location(s) available at that time. Since then, the code locations have been removed.