Changelog for python39-qt5-sip-12.9.0-2.1.i586.rpm :

* Thu May 13 2021 Ben Greiner - Update to 12.9.0
* no release notes, new ABI version.
* Sun Aug 30 2020 Benjamin Greiner - Update to version 12.8.1
* minor bugfix release
* Fri Aug 28 2020 Benjamin Greiner - Initial specfile for version 12.8.0 Quote from https://www.riverbankcomputing.com/static/Docs/PyQt5/installation.html#building-the-sip-module It is not necessary to install the PyQt5.sip module before building PyQt5 but it must be installed before PyQt5 can be used.