Question about Sirius

[Phyllis]

Prof Wootshanks: 

<<Moody said Mundungus borrowed his Invisibility cloak.>>

It's actually Sturgis Podmore who borrowed the Cloak, and he doesn't 
return it because Lucius Malfoy put the Imperius Curse on him while he 
was guarding the Department of Mysteries and he gets convicted of 
trying to break into the Ministry and sent to Azkaban.

But regardless, this has nothing whatsoever to do with Sirius.

Phyllis