rhel8/9: "kernel: FS-Cache: Duplicate cookie detected" messages on mounting multiple NFS at the same time

Issue

We mount multiple shares from an NFS server at boot, like this in /etc/fstab:

192.168.4.1:/mnt/store/tmp      /mnt/tmp        nfs defaults 0 0
192.168.4.1:/mnt/store/tmp2     /mnt/tmp2       nfs defaults 0 0

On system boot, we see this on the console:

[    4.148469] FS-Cache: Loaded
[    4.223361] intel_pmc_core intel_pmc_core.0:  initialized
[    4.234580] FS-Cache: Netfs 'nfs' registered for caching
[    4.243442] Key type dns_resolver registered
[    4.401110] NFS: Registering the id_resolver key type
[    4.401773] Key type id_resolver registered
[    4.402379] Key type id_legacy registered
[    4.415748] FS-Cache: Duplicate cookie detected
[    4.416431] FS-Cache: O-cookie c=00000000d4b78de9 [p=0000000068e3e812 fl=222 nc=0 na=1]
[    4.417617] FS-Cache: O-cookie d=000000009ef12cbd n=0000000027900355
[    4.418628] FS-Cache: O-key=[16] '040000000200000002000801c0a80401'
[    4.419725] FS-Cache: N-cookie c=00000000b1dadc9a [p=0000000068e3e812 fl=2 nc=0 na=1]
[    4.420949] FS-Cache: N-cookie d=000000009ef12cbd n=000000009038c87e
[    4.421926] FS-Cache: N-key=[16] '040000000200000002000801c0a80401'

What to do about it?