Claiming the name of an old dead empty organization?

Hey there,

I wanted to create an org for a project of mine with a set of repos that recently receives a gained interest of contributors. So far so nice. But the best fitting name is already used as an orga. This orga has exactly one forked repository and is essencially dead since 6 years, only 1 followers, no members. So obviously (from my point of view), this account is essentially dead.

How can I claim that name?