'What names are valid git tags?

I have got a error message while creating tag containing [ character:

fatal: '[' is not a valid tag name.

Question: are there any rules for tags in the git?

git git-tag

Solution 1:^[1]

Disallowed characters: '~', '^', ':', '', '?', '[', '*'

Disallowed sequences ".." and "@{"

This symbols/sequences have special meaning to revparse.

Also tag cannot contain " " (whitespace)

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Solution	Source
Solution 1	Andrew____Pls_Support_Ukraine