How to wipe a phone with lost passcode?

I've got a company-owned Android phone that needs to be wiped to prepare it for re-use, but it's locked with a passcode. I also do not see it listed in our MDM software, so I can't force a remote wipe that way. It appears that it could be wiped with a Google account, but I do not know what Google account it may have been linked to. Is there a way to expose which Google account it was attached to in the hopes it's one we have access to? Or is there a way to totally reset it to factory and wipe the data?