I've created 2 copr repositories for CentOS Stream 9 and EL9:
https://copr.fedorainfracloud.org/coprs/g/389ds/389-directory-server/ - contains rebuilds of 389-ds-base and cockpit-389-ds from the latest stable Fedora release (F36 at the moment, will be switched to the next version once released).
https://copr.fedorainfracloud.org/coprs/g/389ds/389-directory-server-next/ - contains rebuilds of 389-ds-base and cockpit-389-ds from Fedora rawhide.
To enable the repository, run:
dnf copr enable @389ds/389-directory-server
And then install:
dnf install 389-ds-base cockpit-389-ds
Please give it a try.
In case of any issues, please let us know or open an issue at https://github.com/389ds/389-ds-base/issues/new/choose