The following note is present in 4.13 "Customizing Nodes" section (https://docs.openshift.com/container-platform/4.13/installing/install_config/installing-customizing.html#installation-special-config-storage-procedure_installing-customizing):

~~~
RHEL 8 provides Clevis version 15, which uses the SHA-1 hash algorithm to generate thumbprints. Some other distributions provide Clevis version 17 or later, which use the SHA-256 hash algorithm for thumbprints. You must use a Clevis version that uses SHA-1 to create the thumbprint, to prevent Clevis binding issues when you install Red Hat Enterprise Linux CoreOS (RHCOS) on your OpenShift Container Platform cluster nodes.
~~~

However, since OCP 4.13, we are using RHCOS-413.92 based on RHEL9 that contains clevis package "clevis-18-110.el9.x86_64", therefore, I think this note should be reworded or even removed for 4.13+

NOTE: Using RHEL8 with older clevis 15 is still compatible with OCP 4.13+

4.13+

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