Character vector for each reference with the associated
commit IDs.
Arguments
name
Character vector with the "remote" repository URL to
query or the name of the remote if a repo argument is
given.
repo
an optional repository object used if remotes are
specified by name.
credentials
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).