Fedora qubes wishing to import gpg key on "dnf search"

In an AppVM based on a template derived from the offiicial fedora-33 one, I’m quite puzzled dnf search prompting me to accept a QubesOS repository key…

$ dnf search bash completion
Qubes OS Repository for VM (updates)                                                                                                                                                                          5.1 kB/s | 833  B     00:00    
Qubes OS Repository for VM (updates)                                                                                                                                                                          2.2 MB/s | 2.3 kB     00:00    
Importing GPG key 0x9E2795E9:
 Userid     : "Qubes OS Release 4 Signing Key"
 Fingerprint: 5817 A43B 283D E5A9 181A 522E 1848 792F 9E27 95E9
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-qubes-4-primary
Is this ok [y/N]: 

… while the updater never complains about anything …

  ----------
            ID: update
      Function: pkg.uptodate
        Result: True
       Comment: System is already up-to-date
       Started: 15:54:58.028084
      Duration: 3873.466 ms
       Changes:   
  ----------

… and seems to allow me reinstalling software from this very repo:

$ sudo dnf reinstall qubes-gui-agent
Last metadata expiration check: 0:18:40 ago on Sun Nov 28 15:40:35 2021.
Dependencies resolved.
==============================================================================================================================================================================================================================================
 Package                                                    Architecture                                      Version                                                  Repository                                                        Size
==============================================================================================================================================================================================================================================
Reinstalling:
 qubes-gui-agent                                            x86_64                                            4.1.23-1.fc33                                            qubes-vm-r4.1-current                                             71 k

Transaction Summary
==============================================================================================================================================================================================================================================

Total download size: 71 k
Installed size: 168 k
Is this ok [y/N]: y
Downloading Packages:
qubes-gui-agent-4.1.23-1.fc33.x86_64.rpm                                                                                                                                                                      294 kB/s |  71 kB     00:00    
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                                                                                                         281 kB/s |  71 kB     00:00     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                                                                                                                                                      1/1 
  Reinstalling     : qubes-gui-agent-4.1.23-1.fc33.x86_64                                                                                                                                                                                 1/2 
  Running scriptlet: qubes-gui-agent-4.1.23-1.fc33.x86_64                                                                                                                                                                                 1/2 
  Running scriptlet: qubes-gui-agent-4.1.23-1.fc33.x86_64                                                                                                                                                                                 2/2 
  Cleanup          : qubes-gui-agent-4.1.23-1.fc33.x86_64                                                                                                                                                                                 2/2 
  Running scriptlet: qubes-gui-agent-4.1.23-1.fc33.x86_64                                                                                                                                                                                 2/2 
Not setting net/ipv4/conf/all/rp_filter (explicit setting exists).
Not setting net/ipv4/conf/default/rp_filter (explicit setting exists).
Not setting net/ipv4/conf/all/accept_source_route (explicit setting exists).
Not setting net/ipv4/conf/default/accept_source_route (explicit setting exists).
Not setting net/ipv4/conf/all/promote_secondaries (explicit setting exists).
Not setting net/ipv4/conf/default/promote_secondaries (explicit setting exists).

  Verifying        : qubes-gui-agent-4.1.23-1.fc33.x86_64                                                                                                                                                                                 1/2 
  Verifying        : qubes-gui-agent-4.1.23-1.fc33.x86_64                                                                                                                                                                                 2/2 
Notifying dom0 about installed applications

Reinstalled:
  qubes-gui-agent-4.1.23-1.fc33.x86_64                                                                                                                                                                                                        

Complete!

What on earth is going on here ?