Checkout @value{HB-name} from the official source-code repository.

@example
@COMMAND-checkout{}
@end example

Sources are checked out from the @samp{@value{HB-repo-branch}} branch. This document was generated from that very branch, and for example purposes, we will use exactly the same branch.

If you have write-access to the repository, then you may add the appropriate login/password information as needed.