installing cvmfs package sometimes fails due to problems with CERN repository

[boegel]

Our pilot_repo workflow sometimes fails because the cvmfs package couldn't be installed:

Err:16 https://cvmrepo.web.cern.ch/cvmrepo/apt focal-prod InRelease
  403  Forbidden [IP: 188.185.87.216 443]
E: Failed to fetch http://cvmrepo.web.cern.ch/cvmrepo/apt/dists/focal-prod/InRelease  403  Forbidden [IP: 188.185.87.216 443]
Reading package lists...
E: The repository 'http://cvmrepo.web.cern.ch/cvmrepo/apt focal-prod InRelease' is not signed.
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package cvmfs

Maybe something to report or ask about upstream?