None of the methods in GitUtil fail if remoteRepoURL is an invalid git repository

[moosichu]

What the enhancement is

If the remoteRepoURL is invalid, we want an error to be thrown straight away. For example:

Happens when git is used in the command-line, but at the moment GitUtil doesn't check for these errors.

The line of code that is relevant is:

shell(args: "git", "clone", "--depth", "1", remoteRepoURL, localRepoPath, "--single-branch")

Maybe it returns -1 on error? (Not sure, haven't checked).

Why it could be helpful

The workshop validator could then throw an immediate error if a given repository doesn't exist, and similarly if invalid repository locations are added to the website for any other reason.

[moosichu]

Nasty edge case: invalide GitHub repos as for authentication first! (For security reasons.)
Two solutions:

• provide default auth info that is valid (create HaC bot account for this reason)
• Provide completely incorrect auth info