@brucel @eleven_ty @Netlify In the google sheets script editor:

function makeBuildHappenNow() {
var url = "https://api.netlify.com/build_hooks/XXXX";
var options = {
"method": "post",
"headers": {},
"payload": {}
};
var response = UrlFetchApp.fetch(url, options);
}

And assigned to a btn as its action.