Missing superblock on one of the raid devices on raid 0 with 1.2 metadata

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Hi all,

We are trying to recover a broken raid 0. It consisted of 4 raid
devices. One of them got the metadata/superblock zeroed and now the raid
cannot assemble.

OS: Gentoo Linux

My colleague will be able to provide more information regarding kernel
version and mdadm version.

Is there a way to copy the superblock/metadata from one of the remaining
drives and edit it prior to placing it on the zeroed drive so that the
raid can be assembled?

Any hints and pointers are welcomed. Is it possible to fix the raid in
the first place? If yes, then how do we locate the superblock/metadata
that needs to be copied and edited from one of the raid member devices?

Thank you,
-Nikolay Kichukov
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