std.process - avoid interaction with parent shell

[Steven Schveighoffer]

I am doing some scripting via D, and using std.process.execute to git 
clone things.

I don't want any user interaction. Occasionally, I get a repository that 
no longer exists (404). Then git comes up and asks for a 
username/password. I want it to just fail. Apparently git has no option 
to be non-interactive, it supposedly checks stdin to see if it's a tty, 
and only errors if it's not.

I tried redirecting /dev/null to stdin when executing my application 
(and I assumed that would pass onto the process child), but it still 
asks. What am I doing wrong?

e.g.:

myapp < /dev/null
Username for 'https://github.com':
Program pauses, waits for my input.

-Steve