I don't know if this is expected or a Fedora issue, but after I updated to Fedora 33 (in-place) I can no longer do ssh operations with cvs.savannah.gnu.org. It is supposed to use uploaded ~/.ssh/id_rsa.pub, but instead it asks for a password:
$ cvs diff bothner@cvs.savannah.gnu.org's password:
See https://savannah.gnu.org/maintenance/SshAccess/
This worked a few days ago, when I did a 'cvs ci' in the same directory. It is possible something changed an Savannah (or I did something wrong), but it seems updating to F33 is the most likely cause.
I updated using the process described here: https://docs.fedoraproject.org/en-US/quick-docs/dnf-system-upgrade/ but with --releasever=33.
I have not tried creating a new new ssh-key with ssh-keygen.
Otherwise Fedora 33 has been smooth sailing so far.