Can't refresh repositories

# zypper clean
All repos were cleared.

# zypper ref 
Repository 'NVIDIA' is up to date.                                                                                             
Repository 'The latest official release of MATE (openSUSE_Leap_15.3)' is up to date.                                           
Retrieving repository 'Main Repository (NON-OSS)' metadata .............................................................[error]
Repository 'Main Repository (NON-OSS)' is invalid.
[download.opensuse.org-non-oss|http://download.opensuse.org/distribution/leap/15.3/repo/non-oss/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.S1sXqO doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Main Repository (NON-OSS)' because of the above error.
Retrieving repository 'Update Repository (Non-Oss)' metadata ...........................................................[error]
Repository 'Update Repository (Non-Oss)' is invalid.
[download.opensuse.org-non-oss_1|http://download.opensuse.org/update/leap/15.3/non-oss/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.5YU4LM doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Update Repository (Non-Oss)' because of the above error.
Retrieving repository 'Main Repository (OSS)' metadata .................................................................[error]
Repository 'Main Repository (OSS)' is invalid.
[download.opensuse.org-oss|http://download.opensuse.org/distribution/leap/15.3/repo/oss/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.kzMKaL doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Main Repository (OSS)' because of the above error.
Retrieving repository 'Main Update Repository' metadata ................................................................[error]
Repository 'Main Update Repository' is invalid.
[download.opensuse.org-oss_1|http://download.opensuse.org/update/leap/15.3/oss] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.Yr1iXN doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Main Update Repository' because of the above error.
Retrieving repository 'network:time' metadata ..........................................................................[error]
Repository 'network:time' is invalid.
[http-download.opensuse.org-a2593d2f|http://download.opensuse.org/repositories/network:/time/openSUSE_Leap_15.3/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.TRx3kL doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'network:time' because of the above error.
Repository 'benchmark' is up to date.                                                                                          
Repository 'Java:packages' is up to date.                                                                                      
Repository 'Mozilla based projects (openSUSE_Leap_15.3)' is up to date.                                                        
Repository 'packman_new' is up to date.                                                                                        
Retrieving repository 'Update repository of openSUSE Backports' metadata ...............................................[error]
Repository 'Update repository of openSUSE Backports' is invalid.
[repo-backports-update|http://download.opensuse.org/update/leap/15.3/backports/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.jFZr2K doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Update repository of openSUSE Backports' because of the above error.
Retrieving repository 'Update repository with updates from SUSE Linux Enterprise 15' metadata ..........................[error]
Repository 'Update repository with updates from SUSE Linux Enterprise 15' is invalid.
[repo-sle-update|http://download.opensuse.org/update/leap/15.3/sle/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.CX8GQO doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Update repository with updates from SUSE Linux Enterprise 15' because of the above error.
Retrieving repository 'openSUSE-Leap-15.3-Update' metadata .............................................................[error]
Repository 'openSUSE-Leap-15.3-Update' is invalid.
[repo-update|http://download.opensuse.org/update/leap/15.3/oss/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.gLfvEL doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'openSUSE-Leap-15.3-Update' because of the above error.
Some of the repositories have not been refreshed because of an error.
linux:/home/host # LANG=C zypper ref && LANG=C  zypper patch && LANG=C zypper up && zypper verify && zypper pchk && date
Repository 'NVIDIA' is up to date.                                                                                             
Repository 'The latest official release of MATE (openSUSE_Leap_15.3)' is up to date.                                           
Retrieving repository 'Main Repository (NON-OSS)' metadata .............................................................[error]
Repository 'Main Repository (NON-OSS)' is invalid.
[download.opensuse.org-non-oss|http://download.opensuse.org/distribution/leap/15.3/repo/non-oss/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.NkEe8J doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Main Repository (NON-OSS)' because of the above error.
Retrieving repository 'Update Repository (Non-Oss)' metadata ...........................................................[error]
Repository 'Update Repository (Non-Oss)' is invalid.
[download.opensuse.org-non-oss_1|http://download.opensuse.org/update/leap/15.3/non-oss/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.tpHMJH doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Update Repository (Non-Oss)' because of the above error.
Retrieving repository 'Main Repository (OSS)' metadata .................................................................[error]
Repository 'Main Repository (OSS)' is invalid.
[download.opensuse.org-oss|http://download.opensuse.org/distribution/leap/15.3/repo/oss/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.TrGuOI doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Main Repository (OSS)' because of the above error.
Retrieving repository 'Main Update Repository' metadata ................................................................[error]
Repository 'Main Update Repository' is invalid.
[download.opensuse.org-oss_1|http://download.opensuse.org/update/leap/15.3/oss] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.rBKXbG doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Main Update Repository' because of the above error.
Retrieving repository 'network:time' metadata ..........................................................................[error]
Repository 'network:time' is invalid.
[http-download.opensuse.org-a2593d2f|http://download.opensuse.org/repositories/network:/time/openSUSE_Leap_15.3/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.aH2qsK doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'network:time' because of the above error.
Repository 'benchmark' is up to date.                                                                                          
Repository 'Java:packages' is up to date.                                                                                      
Repository 'Mozilla based projects (openSUSE_Leap_15.3)' is up to date.                                                        
Repository 'packman_new' is up to date.                                                                                        
Retrieving repository 'Update repository of openSUSE Backports' metadata ...............................................[error]
Repository 'Update repository of openSUSE Backports' is invalid.
[repo-backports-update|http://download.opensuse.org/update/leap/15.3/backports/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.tNJZHG doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Update repository of openSUSE Backports' because of the above error.
Retrieving repository 'Update repository with updates from SUSE Linux Enterprise 15' metadata ..........................[error]
Repository 'Update repository with updates from SUSE Linux Enterprise 15' is invalid.
[repo-sle-update|http://download.opensuse.org/update/leap/15.3/sle/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.1pTaFG doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'Update repository with updates from SUSE Linux Enterprise 15' because of the above error.
Retrieving repository 'openSUSE-Leap-15.3-Update' metadata .............................................................[error]
Repository 'openSUSE-Leap-15.3-Update' is invalid.
[repo-update|http://download.opensuse.org/update/leap/15.3/oss/] Valid metadata not found at specified URL
History:
 - File /var/tmp/TmpFile.fxv1VF doesn't contain public key data

Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository 'openSUSE-Leap-15.3-Update' because of the above error.
Some of the repositories have not been refreshed because of an error.

Any idea please ?

wait a few hours, maybe the server will be synced.

I don’t think so.

The problem with the fingerprint validation* resists.*
And it only exist with Tumbleweed repo, Leap repo has no problem.

I believe anyone made an error building the repo when implementing the new G05 packages with version 470.86.

What has Nvidia to do with this problem about the openSUSE servers?

… and if it’s still not working try temporarily specifying a mirror directly instead of download.opensuse.org and see how it goes.

Mirrors are listed here: https://mirrors.opensuse.org/

But note the message at the top of the page, regarding direct use of a mirror.

Sorry, it was a misunderstanding. I googelt for my problem, and have seen NVIDIA at first and stopped reading …

Thank you, waiting has solved this issue.