This is part II (otherwise pipeline times out)
More than 3/4th of these packages already have !check on some architectures (and I honestly suspect that the reason is also related to qemu-user-static being used). The total # of packages here is not that great to disable checks for (at least not that great for a brand new architecture) and I will definitely be investigating if these failures can be mitigated.
For now, though, the content of the packages appears to be fully functional AND most of them are key packages to bootstrap the rest of main -- hence a humble request to allow this for until we are ready to officially release riscv64 in Alpine 3.15.