used the xda username + “github” from that thread to land at repos. There are a few duplicates, though recently updated were:
https://github.com/riyanahmed65/device-motorola-potter
https://github.com/riyanahmed65/vendor-motorola-potter
the potter SoC (qualcomm 625) is also used in moto deen [UNOFFICIAL BUILD] Motorola One XT1941-4 "deen" for e/OS 1.17 q - motorola has its kernels up in an official repo where people fork from. Probably would go with
https://github.com/LineageOS/android_kernel_motorola_msm8953/