From the linked article:
However, before Packers fan spew venom toward Favre like some did when he played for the rival Vikings, it appears he had nothing to do with it.
"The Hall's curatorial staff selects the artifacts for exhibit," Pete Fierle, vice president of communications for the Hall of Fame, told ESPN.com.
According to the Hall of Fame, the Packers jersey is the one Favre wore when he broke the NFL career touchdown pass record. The Vikings jersey is the one he wore when he broke Jim Marshall's NFL record for consecutive starts.
Also within the locker is the inactive sheet from the game that ended Favre's starting streak. Out of 30 million artifacts, the Hall of Fame said it is the lone inactive sheet in the Hall's collection.