Post-hook for self-update

[reitzig]

I've taken to installing shell completions through postinstall hooks, which goes something like this:

[tools.chezmoi]
version = "latest"
postinstall = 'chezmoi completion fish > "$FISH_COMPLETION_DIR/chezmoi.fish"'

What I haven't been able to figure out is how to run

mise completion fish > "$FISH_COMPLETION_DIR/mise.fish"

after I mise self-update.

hooks.postinstall seems to run after installing any tool through mise, which is not what I would need.
Did I miss anything?

If not, I'd propose hooks.postselfupdate for the purpose.