What were you trying to do that didn't work?

I just found out through debugging RHEL-36186 that Anaconda was implementing the stub file /boot/efi/EFI/redhat/grub.cfg by itself (pyanaconda/modules/storage/bootloader/efi.py):

172     def write_config(self):
173         config_path = "%s%s" % (conf.target.system_root, self.efi_config_file)
 :
190             fd.write("search --no-floppy --fs-uuid --set=dev %s\n" % fs_uuid)
191             fd.write("set prefix=($dev)%s\n" % grub_dir)
192             fd.write("export $prefix\n")
193             fd.write("configfile $prefix/grub.cfg\n")

IMHO this is a bug, it should let grub2-common generate the stub file, because this file may evolve.
For example, it will evolve because of RHEL-4388.
Additionally without this reimplementation we would have hit RHEL-36186 earlier before RHEL9 was even released.

Please provide the package NVR for which bug is seen:

Anaconda RHEL9

How reproducible:

N/A