There are two versions in Penguin Australian Folksongs Vol 1 - the tunes are slightly different. The first verse as I recall it goes:

A sergeant and three constables rode out from Mansfield town,
At the end of last October for to shoot the Kellys down,
They started for the Wombat Hills and found it quite a lark,
To be camped upon the borders of a Creek called Stringybark.

Joe Offer may post these before I get the chance. Regards, John