Function bootstrap::utils::helpers::git

pub fn git(source_dir: Option<&Path>) -> Command

Prepares Command that runs git inside the source directory if given.

Whenever a git invocation is needed, this function should be preferred over manually building a git Command. This approach allows us to manage bootstrap-specific needs/hacks from a single source, rather than applying them on next to every Command::new("git"), which is painful to ensure that the required change is applied on each one of them correctly.