Topic Previews move to a Theme Component was initially experimental. When that experimentation ended and the theme component version matured the complimentary plugin branch was merged to the master branch and the plugin renamed to make its new purpose more obvious. The branch move meant that the old branch was no longer maintained. All you need to do is remove the branch option as the name changes are automatically mapped by GitHub. This happened some time ago. See: Topic List Previews Theme Component for up-to-date links. (Oh I see you posted them, thanks @itsbhanusharma )
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