In a large skillet with a lid, heat the olive oil, two turns of the pan, over medium-high. Add the sausage and cook, breaking into large pieces with the back of a spoon. Add in sage, fennel seed and ground cloves or allspice. Cook until browned, about 6 minutes.
Add the squash, onion, garlic, chile and nutmeg; season with salt and pepper. Cook, stirring occasionally, until the vegetables begin to soften, 2-3 minutes. Add the stock and cover. Reduce the heat to medium-low and simmer, stirring occasionally, until the squash is tender, 18-20 minutes.