Access to git using ssh from windows powershell

Change your passphrase, so it can actually be entered on the command line
puttygen
- open private key
- change passphrase
- export as OpenSSH key

posh-git
Import-Module posh-git
Start-SshAgent -Quiet
add-sshkey "C:\Users\....ppk"

    the last statement will ask you for your passphrase