Intermittent SSH errors - 'Connection closed by 104.192.143.1' (BBCDEV-1775)

Some users have reported issues when cloning/pulling/pushing via SSH.

These operations sometimes fail with error:

'Connection closed by 104.192.143.1'
or

'Connection to git@bitbucket.org:22 exited: Remote closed the connection
fatal: Could not read from remote repository.'

We are currently investigating this as a bug.