There\'s a lot of questions about the following error, but they all have same solution which did not have any effect:
$ git push Unable to negotiate with 192
Resolved by using this command I randomly found in some comment thread:
export GIT_SSH_COMMAND='ssh -o KexAlgorithms=+diffie-hellman-group1-sha1'
Must be called every time you open the Git Bash. Yeah, git is hell.