Fresh install of Fedora 42. Packages with signatures different

Hello.
I have just installed Fedora 42 server. Install worked without any problems. After the install I tried to update the OS using “dnf update -y”. I experienced many packages had incorrect package signatures and the update could not proceed.
Is there a repository I can switch to to get packages that are going to install? I don’t want to ignore signatores incase they have been tampered with.
Thanks

try

sudo dnf clean all
sudo dnf update

maybe you hit a mirror that is experiencing a problem.

Hi,
That did work, however when I did:
sudo dnf group install gnome-desktop , I got the same problem until I used sudo dnf group install gnome-desktop --best .

I have never needed to do this.