I have a version of this song called "Keemo Kimo" on a wonderful album called Children's Songs, all performed by Ed McCurdy, on Tradition records. The chorus goes like this:

Keemo, Kimo, where oh where
Ma-hee, Ma-High, along comes Sally singing
Sing-song pennywhistle, in comes Nippy cat
Sing Song Kitty Kitchee Ki Me Oh.

Spelling is obviously up for grabs.