Is this something wrong with ssh on my computer? Never seen this kind of problem.

[Wei Cai]

[Patrik S]

Hello @Wei Cai ,

Welcome to Atlassian Community! 

It seems like the git command is facing some issues to execute the underlying OpenSSH binary used to authenticate with Bitbucket.

I see you are using Windows, so I would suggest downloading Git for Windows as it brings a bash emulation used to run Git from the command line. It's basically an emulation of the UNIX bash system for your git commands.

Thank you, @Wei Cai !

Patrik S