RTL-433 along with a RTL-SDR dongle can receive and decode 310MHz.
X10 RF is one example. I tested with the old X10 motion detectors (310 MHz - protocol 22) and unit/house codes are detected.
But as mentioned above, check first if a decoder exists for your opener as I also suspect rolling codes:
https://community.home-assistant.io/t/home-assistant-add-on-rtl-433-with-mqtt-auto-discovery