What happens if the Pope is automatically excommunicated?

Some actions incur automatic excommunication . While it is debated whether a Pope can lose the office via heresy , what happens if a pope commits a sin *other* than heresy, such as abortion or violating the seal of confession, which carries an equal penalty? Is the Pope subject to the automatic excommunication? If so, would the election of a new Pope be called for? What would then happen (in terms of the Papacy) if the excommunicated Pope repented and rejoined the church?