Hello Jeremy!
5.0.0 was just released, this branch might help with comgr against llvm13: https://github.com/Mystro256/ROCm-CompilerSupport/tree/rocm-roc-5.0.x-llvm13
I was about to write you :) Fortunately, Sylvestre Ledru has landed llvm-14 rc1 in debian unstable.So I updated the packaging to llvm14+rocm5.0, the comgr patches [1], which are slightly simpler than for llvm13.
Best regards, Maxime[1] https://salsa.debian.org/rocm-team/rocm-compilersupport/-/tree/master/debian/patches