Re: Managing signed git tags and expiring keys

"Jonathan \"Duke\" Leto" [off-list ref] writes:

When the key changes, all existing tags are signed with the previous
key in the chain of trust.

Do people:
1) resign all the tags, causing people to overwrite their local tags
2) keep all versions of the keys in the chain of trust
3) something else more involved?

Is anybody doing this currently?

Many kernel.org users (Linus and myself included) changed their signing
keys last year, so their project histories have tags signed with different
keys. I highly doubt anybody revoked old key and re-signed his tags with
new one.