The song you have in mind is 'The Shearer's Dream':
I dreamt I shore in a shearing shed
And it was a dream of joy,
For every one of those roustabouts
Was a girl dressed up as a boy.
I can't jus now recall much more, but can do so if noone else beats me to it. Bert Lloyd certainly used to sing it and (from memory) I believe its in the Penguin Australian Folksongs.