rfpkg scratch-build expected to work?

I tried a scratch build on RPM Fusion which I haven't done in some time and was greeted with the following: $ rfpkg scratch-build --srpm setting SOURCE_DATE_EPOCH=1673913600 Wrote: /home/build/rpmfusion-scm/nonfree/unifi/unifi-7.3.81-1.el8.src.rpm [====================================] 100% 00:00:29 175.17 MiB 5.95 MiB/sec Building unifi-7.3.81-1.el8.src.rpm for el8-nonfree Could not execute scratch_build: invalid channel policy Thanks, Richard