I see these dist-git branches for rhaos-4.13-rhel-8:

buildah rhaos-4.13-rhel-8 release-1.29.0 —
cockpit-podman rhaos-4.13-rhel-8 39-1 — —
conmon rhaos-4.13-rhel-8 3:2.1.5-0.1.rhaos4.13 — c9f7f19
containernetworking-plugins rhaos-4.13-rhel-8 1.0.1-5.rhaos4.11 — —
containers-common rhaos-4.13-rhel-8 2:1-32.rhaos4.13 — —
container-selinux rhaos-4.13-rhel-8 2:2.198.0-1.rhaos4.12 — —
crun rhaos-4.13-rhel-8 1.7.2-1.rhaos4.13 — —
fuse-overlayfs rhaos-4.13-rhel-8 1.10-1 — —
oci-seccomp-bpf-hook rhaos-4.13-rhel-8 1.2.3-4 — —
podman rhaos-4.13-rhel-8 3:4.4.0-0.3.rhaos4.13 main 929d03a
python-podman rhaos-4.13-rhel-8 3.2.1-5 — —
rhcos-toolbox rhaos-4.13-rhel-8 0.1.0-1.rhaos4.13 — —
runc rhaos-4.13-rhel-8 4:1.1.4-1.rhaos4.13 — —
skopeo rhaos-4.13-rhel-8 2:1.11.0-1.rhaos4.13 — 9686701
slirp4netns rhaos-4.13-rhel-8 1.1.8-1.rhaos4.11 — —
udica rhaos-4.13-rhel-8 0.2.6-3 — —
yajl rhaos-4.13-rhel-8 2.1.0-11 — —

but for rhaos-4.13-rhel-9 only these:

buildah rhaos-4.13-rhel-9 release-1.29.0 —
conmon rhaos-4.13-rhel-9 3:2.1.5-2.rhaos4.13 — c9f7f19
crun rhaos-4.13-rhel-9 1.7.2-1.rhaos4.13 — —
podman rhaos-4.13-rhel-9 2:4.4.0-0.3.rhaos4.13 main 929d03a
skopeo rhaos-4.13-rhel-9 2:1.11.0-1.rhaos4.13 — 9686701

At least containers-common (and maybe others) need to be added to RHEL9 so that podman and friends are actually installable in RHAOS.

Thanks!
Jindrich