I learned this song (with slightly different lyrics) from my father, who learned it from his mother, who learned it from her father. I don't know from whom he learned it. I have never found it in a songbook, much less sheet music. This is how my dad sang it:

Come all ye merry huntsmen who love to hunt the fox
Who love to hunt poor Reynard among the hills and rocks.
CHORUS:
Come a hoot come a hoot come a hiyo, along the merry way.
A rap rap rap, a tap tap tap A bow-wow-wow and a bugle call
A fee-fie-fiddle, and an eye-dee-oh
And through the woods we'll run brave boys
and through the woods we'll run

First we saw a boatman a-rocking in his boat.
He said he saw poor Reynard, among the waves afloat.
CHORUS

Next we saw a blind man as blind as he could be.
He said he saw poor Reynard up in a hollow tree.

CHORUS

Any other versions?