Changelog for kmod-megaraid_mbox-2.20.5.1-2.el8_1.elrepo.x86_64.rpm :

* Fri Nov 08 2019 Philip J Perry 2.20.5.1-2- Rebuilt for RHEL8.1
* Sun Sep 15 2019 Philip J Perry 2.20.5.1-1- Initial el8 build of the kmod package.- Backported from kernel-4.18.20