There are 2 versions in the DT, enter into the search box Sacramento & that'll get them for you. Therre are 4 versions in Hugill's "Shanties From the Seven Seas". Doerflinger has 3 versions in his "Shantymen & Shantyboys" & it seems he has a close version placed onboard a ship a year before Foster (acc. to him 1850) wrote Camptown Races.Hunington also has a close version (same as Doerflinger's) The California Song from the log of the LaGrange 1849. Here's that chorus:

"Then ho bo boys ho to California go
For the mountains bold are covered with gold
On the banks of the Sacramento
Heigh ho away we go
Digging up gold in Frisco

Shay does have a version, it might be that you're looking for this using a different name & not having much luck. A few real nice recordings of this are done by Holstock & McLoed on their shanties of the goldrush & the Mystic Seaport Shantymen on their American Sea Chanteys (complete with them working & sounds of the capstan).
Barry