How to book Indian buses and trains in advance without an Indian phone number?

Is it possible these days to book Indian buses and trains in advance without an Indian phone number? When I look online, all sites and apps require an Indian phone number, which as a non-Indian, I do not have. I’d like to book in advance because of possible limited availability. There used to be work arounds involving spoofed SIMs, but I understand those loopholes have closed.