I switched my proxy client from ssr to clash for windows for some reason. Then I got an Error prompt of DNS changing of github.com in known_hosts while using git clone.

So I deleted the item and git clone again, still failed. Then I re-generated a ssh key pair through ssh-keygen -t rsa -C “my-comment” and stored on github->settings->SSH keys. While testing ssh -vvvT git@github.com, it required password of git@github.com.

Here’s the debug output:

OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2
debug2: resolving "github.com" port 22
debug2: ssh_connect_direct
debug1: Connecting to github.com [223.75.236.241] port 22.
debug1: Connection established.
debug1: identity file C:\Users\Zhiyu/.ssh/id_rsa type 0
debug1: Local version string SSH-2.0-OpenSSH_for_Windows_8.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6
debug1: match: OpenSSH_7.6 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.4*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002
debug1: Authenticating to github.com:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
...
...
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: rsa-sha2-512
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ssh-rsa SHA256:rEmlJenVMSL5GVemSY0Gk8WGw6B4ege4J85M+vup8R0
debug3: hostkeys_foreach: reading file "C:\Users\Zhiyu/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file C:\Users\Zhiyu/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from github.com
debug3: hostkeys_foreach: reading file "C:\Users\Zhiyu/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file C:\Users\Zhiyu/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from 223.75.236.241
debug1: Host 'github.com' is known and matches the RSA host key.
debug1: Found key in C:\Users\Zhiyu/.ssh/known_hosts:1
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: C:\Users\Zhiyu/.ssh/id_rsa RSA SHA256:jO+os6x3rIy+5c/z92Q7yMY9RLUbLLXMvTwzM7mMiKs agent
debug1: Will attempt key: C:\Users\Zhiyu/.ssh/id_dsa
debug1: Will attempt key: C:\Users\Zhiyu/.ssh/id_ecdsa
debug1: Will attempt key: C:\Users\Zhiyu/.ssh/id_ed25519
debug1: Will attempt key: C:\Users\Zhiyu/.ssh/id_xmss
debug2: pubkey_prepare: done
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug3: start over, passed a different list publickey,password,keyboard-interactive
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering public key: C:\Users\Zhiyu/.ssh/id_rsa RSA SHA256:jO+os6x3rIy+5c/z92Q7yMY9RLUbLLXMvTwzM7mMiKs agent
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Trying private key: C:\Users\Zhiyu/.ssh/id_dsa
debug1: Trying private key: C:\Users\Zhiyu/.ssh/id_ecdsa
debug1: Trying private key: C:\Users\Zhiyu/.ssh/id_ed25519
debug1: Trying private key: C:\Users\Zhiyu/.ssh/id_xmss
debug2: we did not send a packet, disable method
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password
debug3: authmethod_is_enabled keyboard-interactive
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug3: send packet: type 50
debug2: we sent a keyboard-interactive packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug3: userauth_kbdint: disable: no info_req_seen
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred:
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
debug3: failed to open file:D:/dev/tty error:3
debug1: read_passphrase: can't open /dev/tty: No such file or directory
git@github.com's password:

My Envs with SSH keys configured:

Windows 11 (Fail, requiring password) [OpenSSH 8.1p1].
WSL2 Kali on Win11 (Fail, requiring password) [OpenSSH 8.7p1].
Ubuntu18 VM (Success with ssh -T git@github.com) [OpenSSH 7.6p1].
I also tried to scp UbuntuVM:~/.ssh/id_rsa* Win11:~/.ssh/ and test with ssh -T git@github.com, but it still failed with password requiring.

I’m really confused. 🙁