This git credential helper disables any known git password prompt, and it's meant to be used on automated programs that want to get an error instead of an hanged git prompt when a repository requires authentication.
This helper is released under the MIT license.
Install this Rust package with:
cargo install git-credential-null
Then pass -c credential.helper= -c credential.helper=null when you want to
disable the prompt. For example:
git -c credential.helper= -c credential.helper=null clone https://github.com/ghost/doesnt-exist