Rolling in the gi offers a unique opportunity to counter this guard pass that isn't available in no-gi training (there are other options, though). As your partner starts to execute the pass (and you should see it coming a mile away by now), reach over with your own left arm (mirroring their position on you) and untuck their lapel, getting a firm grip on their jacket.

This will keep them from turning and finishing the back take completely. While it's going to be difficult to stop your partner from getting their leg free to (partially) finish the guard pass, it won't be impossible for you to step over and get your own hook with your left leg, particularly if you use your free right arm as a stiff arm on your partner's pants grip, keeping them from stepping back.

Now you've created what's essentially an "even money back take" situation: Either person can get the other's back, with one caveat—you have their lapel. Now, build your base up as though to hip bump your partner over (and, indeed, if your partner doesn't react, just come up on top). As your partner responds, use the space they've created to scoot your hips out and execute your own back take.