Such a thing is called the Losmandy G11 with Stepper motors. You buy it, use it, sell it when your repair comes back.

Or you buy it, use it, and sell the CGEM when it comes back.

You can pick up a used G11 with steppers for $1700. You can convert it to Gemini at some later point, or you can buy it with Gemini used or new.

On the used market, the G11 will sell for what you paid for it used, so this amounts to an almost-free rental.

Greg N