KDE Plasma started using ksshaskpass to enter passwords when logging into a server using ssh or fetching/pushing with git.

This is generally great... except that kwallet stops working for whatever reason preventing ksshaskpass from popping up at all completely blocking you from entering a password causing the application to appear to hang.

With ssh, you can confirm it is using askpass by passing the -v argument to ssh and looking for

debug1: Next authentication method: password
debug1: read_passphrase: requested to askpass

To disable that, either unuset both variables.

unset SSH_ASKPASS
unset SSH_ASKPASS_REQUIRE

Then it will just prompt in the console like it has always done.

Alternatively you can remove it where it is added from (or add it to .bashrc):

/etc/xdg/plasma-workspace/env/neon_ksshaskpass.sh 

However it is best to keep it enabled.