If I run
git clone firstname.lastname@example.org:some-org/some-repo.git, I'm prompted with the following:
The authenticity of host 'github.com (126.96.36.199)' can't be established. RSA key fingerprint is SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8.
Obviously, I verify the fingerprint against the list at https://help.github.com/articles/github-s-ssh-key-fingerprints/, and respond
Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'github.com,188.8.131.52' (RSA) to the list of known hosts. ...etc.
That results in two entries being added to my
~/.ssh/known_hosts file, both with the same key, both hashed.
If I confirm the key with
ssh-keyscan github.com, the key matches.
But why do I have two entries in
known_hosts, rather than one?