In the TDV AdministrationGuide.pdf, the section on Using the Package Import Utility provides a list of parameters for the Package Import utility (i.e. pkg_import.bat). They are to be supplied on the command line as:
[-set <path> <data_type> <attribute> <value>] ...
The parameter listed include: user, password, user2, password2, host, port, database, path, annotation.
There is no parameter listed for spn aka “Service Principal Name”, which we require to be modified between environments, to enable Kerberos authentication to the appropriate database(s).