My inability to access the fedoraproject.org sites was something to do with the IPFire Proxy. I changed my browser to use the system proxy and sites are accessible now.
Anyway, found the patch that Fedora have used for pciutils-3.9.0 to fix the problem of some symbols not being made available.
However version pciutils-3.10.0 has been released and Fedora have installed that and it doesn’t need the extra patch anymore as they have removed it. So I will submit an update patch for pciutils-3.10.0
Your quickest solution will still be to re-install CU174, do the firmware update then upgrade to CU175.
After APU BIOS version 4.19.0.1 I think it will be a long time, if at all, before another BIOS update is issued.
See:-
https://community.ipfire.org/t/implication-of-eol-firmware-announcement-for-apu-boards/9316