The spell is almost entirely up to the GM; but it does not last longer than 1 round
Much of the spell is left up to the GM's interpretation:
[...] You might issue a command other than one described here. If you do so, the GM determines how the target behaves. [...]
What any given word that is not one of the five listed does (Approach, Drop, Flee, Grovel, Halt) is up to the GM. "Doff" is not listed, so all of its effects will vary from table to table.
That said, the spell does have a duration of "1 Round" from which we can conclude that its magic does not persist beyond the first round where it takes effect. The rules on Duration state:
A spell's duration is the length of time the spell persists. [...]
The spell has no lasting effects for commands that may take a long time to perform. To manipulate somebody's actions across multiple turns you will need a different kind of spell such as suggestion or dominate monster.