With the addition of the chorus, "Git along....," the minstrel descendant and Af.-Am. song "Massa Had a Yaller Gal" become 'Cindy, Cindy." The root of 'Massa had' seems to be "The Gal from The South," an old minstrel tune (see thread 46824).
When was the chorus, a great improvement, first added? Is it also descended from another?

Lyr. Add: Massa Had a Yaller Gal
White, 3A

Old marster had a yellow gal,
He brought her from the South;
Her hair was wropped so close an' tight,
She couldn't shet her mouf.

He carried her into the barber shop
To have her mouf cut small;
She backed her years all at once
And swallowed shop and all.

Her head looked like a coffee pot,
Her nose looked like the spout,
Her mouf looked like the fireplace
With the ashes taken out.

Many verses of this type, floating between African-American party songs and among the party songs of whites as well. N. I. White, 1928, American Negro Folk-Songs, Social Songs 3A-G, pp. 152ff.

The song may be derived in other ways, but this seems plausible to me.