❯ ssh-keyscan -p 222 gitery.altlinux.org                                                                                                                                     
                                                                                                                                                                             
# gitery.altlinux.org:222 SSH-2.0-OpenSSH_9.6                                                                                                                                
[gitery.altlinux.org]:222 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBBumTn7y+cZ+ASibBWipgbTXfJmq4+9oXuT5uqusZ0SMb3Fc/bvB3BwDMSNsRrz1ffvkAG4pi99
Lnbyp7A9c/cQ=                                                                                                                                                                
# gitery.altlinux.org:222 SSH-2.0-OpenSSH_9.6                                                                                                                                
[gitery.altlinux.org]:222 ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQC5g3LorKpJi9MyEZtl5tpRD8Shn0ME6WLx4JWg7J7RvBCvD37GHVlpETgFM4X15g3h1m+42IAiwoCFwzQQSA/xpq+NGaUDeiIQmVRjUGGIqrJ
L87AAaTpuUDRrFDRRO6SdhNAJ6K3lUIIp4g8XqZ6W8hSv5SELpMyee+8wYzX68Yqye/CzhebbcRAdidP2jjgvz62Jd61QyOx35CApLi+5YTzgYMlywfPVX2B2jD9lkLPu0O5C5ZhF2v3kJpEl3KMEt3LUPKERQdvcTZsAdh+7FhUy
riWg3D5Zo3aVSfAwBQ1ufN7MxmhR1diYgPnlmhWUBazYhO81xcQpHZbQgBLfUc0+n8pUcQBnv2exA31FPbM8yOzYm0awThqensjzlRrlLOGLvL4pE1/0zK0ZxItiy+Me75lYrFFd5c2gDnM5iv99w4rmPcZbYQRs8uInqrzJ0Dek7
JTZWIa8VE+sMB+aUAFiHxFOqvxfWdLnMIcbhH2+c6n++vv0NH3wuZyz1b8=                                                                                                                  
# gitery.altlinux.org:222 SSH-2.0-OpenSSH_9.6                                                                                                                                
[gitery.altlinux.org]:222 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF+AzVB8henTAz8rogV5Pe52Sun7+pAi1FLQQ80sIa5h                                                                   
# gitery.altlinux.org:222 SSH-2.0-OpenSSH_9.6                                                                                                                                
# gitery.altlinux.org:222 SSH-2.0-OpenSSH_9.6                                                                                                                                
                                                                                                                                                                             
❯ echo '[gitery.altlinux.org]:222 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF+AzVB8henTAz8rogV5Pe52Sun7+pAi1FLQQ80sIa5h' >> ~/.ssh/known_hosts                                    
                                                                                                                                                                             
❯ git push origin sisyphus                                                                                                                                                   
                                                                                                                                                                             
Warning: Permanently added the ED25519 host key for IP address '[194.107.17.122]:222' to the list of known hosts.                                                     
ssh: git_lakostis@gitery.altlinux.org: Permission denied (publickey).                                                                                                        
fatal: Could not read from remote repository.                                                                                                                                
                                                                                                                                                                             
Please make sure you have the correct access rights                                                                                                                          
and the repository exists.

при этом сборочница с тем же ssh ключем работает:

❯ ssh build.alt
ssh: PTY allocation request failed on channel 0
-girar-sh: Not enough arguments.
-girar-sh: Try `help' command for more information.
Connection to gyle.altlinux.org closed.