As of Joomla 3.2.3 there is no way to reset Article hits, but there is a workaround.

Third party developers have made some solutions for reseting or changing the Joomla Article hit counter here.

It is also possible to edit the hits value directly in the database _content table (hits column).

When a Joomla Article is copied the hits value is also copied (not reset) and you may want to reset the hit count for the copied version.

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