The text given at the beginning of this thread is almost identical, with one major addition, to the one sung by MacColl, who regularly used as a finishing song at the Singers Club.
His penultimate verse was:

The cocks are crawin' the birds are whistlin'
The burns they ran free abune the brae,
"Remember lass, I'm a ploughman laddie
And the fairmer I must obey".

The source he gives in 'Folk Songs and Ballads of Scotland' (Oak Publications 1965) is 'From the singing of James Grant of Aberdour, Banffshire'.
Jim Carroll