Everything is anticipated...

[rhu]

On Yoma 10b, there's a discussion of whether the sequestration chamber used by the Kohen Gadol (high priest) before Yom Kippur requires a mezzuzah to be affixed to its door, since he's only living there one week out of the year. The answer is "yes."

According to Rabbi Elefant's podcast, this source is used by modern poskim to answer the question of whether a time-share requires a mezzuzah. I'm amused.