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Buyer Receives Fake Core i9-13900K With i7-13700K Guts From Amazon
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
Is it fiber or copper? Copper is probably not going to get you that far, but fiber can supposedly still deliver a decent signal at up to 60m.
There are HDMI cables that are basically HDMI to fiber tranceivers. The HDMI plug draws power from the HDMI port to use active components to convert to a fiber signal.
There are optical HDMI cables with much longer maximum lengths than passive copper cables. I assume the electrical - optical conversion is done in the plug itself.