The reason for this team to exist is to subscribe to the bug reports from Qt 5 modules.

The modules include (at least) what is listed here: https://bugs.launchpad.net/~ubuntu-qt-packagers/+packagebugs

Actual packaging is in Salsa: https://salsa.debian.org/qt-kde-team/qt

Search for available *-opensource-src packages via: https://launchpad.net/ubuntu/+search?search_type=source&text=-opensource-src