Always force BatchMode for the Git SSH command (#392)
Always force BatchMode for the Git SSH command (#392)

The previous implementation did not disable SSH password prompts when
`GIT_SSH_COMMAND` has been set. This allowed the zsh-async worker to
"break" due to an interactive program capturing keystrokes, which were
actually output from the worker.

Fixes #373.
sindresorhus/pure,kgrz/pure,jaredru/zsh-pure,forivall/pure,joshuarubin/dotfiles,joshuarubin/dotfiles,mafredri/pure,joshuarubin/dotfiles,joshuarubin/dotfiles