List references in a remote repositorySource:
Displays references available in a remote repository along with the associated commit IDs. Akin to the 'git ls-remote' command.
Character vector with the "remote" repository URL to query or the name of the remote if a
repoargument is given.
an optional repository object used if remotes are specified by name.
The credentials for remote repository access. Default is NULL. To use and query an ssh-agent for the ssh key credentials, let this parameter be NULL (the default).