Well, in GNU sed, for example, you can jump to an empty label:
For example, echo bungee | sed ':;s/\(.\)\(.*\)e/\2\1/;t;'
UPDATE: I didn't give an answer to your question, so here it is. I saw that you can create an empty label (you can't), and wondered how to jump there. A simple goto; is not enough. So I tried goto "";.
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