gh repo clone <repository> [<directory>] [-- <gitflags>...]
Clone a GitHub repository locally. Pass additional
git clone flags by listing them after "--".
If the "OWNER/" portion of the "OWNER/REPO" repository argument is omitted, it defaults to the name of the authenticating user.
If the repository is a fork, its parent repository will be added as an additional git remote called "upstream". The remote name can be configured using
--upstream-remote-name option supports an "@owner" value which will name the remote after the owner of the parent repository.
- -u, --upstream-remote-name <string>
Upstream remote name when cloning a fork