The criu package limits the architectures it will build on using an ExclusiveArch statement, and riscv64 is not included in the list.

criu itself has included support for the riscv64 architecture since upstream version 4.1; the Fedora package has already been updated to allow building on riscv64. We should do the same for RHEL.

I will create an MR with the necessary changes shortly.