The version I am used to hearing is slightly different and likely is more about a female visitor:

1. She'll be coming 'round the mountain when she comes.

2. She'll be driving 6 white horses when she comes.

3. Oh we'll all go to meet her when she comes.

4. Oh we'll kill the old red rooster when she comes
Yes we'll kill the old red rooster when she comes,
Oh we'll kill the old red rooster,
He won't crow like he used to
Oh we'll kill the old red rooster when she comes.

5. We'll have chicken and dumplings when she comes.