Get actual Job Name from Program Name column of the results while running sp_whoisactive or sp_who2
You can do this easily with sp_WhoIsActive.
EXEC dbo.sp_WhoIsActive 
    @get_additional_info = 1, 
    @get_task_info = 2;


If you click on the additional_info column, you'll see this:

You don't explicitly need the @get_task_info parameter to retrieve the extra information, it's just a very useful general combination.