I'm trying to submit a package that is hosted on Bitbucket to Bioconductor.

As per the Contribution Guidelines, I opened an issue in the Bioconductor/Contributions repository, with a link to my package.

The issue was auto-closed by a bot, with the message

"I couldn't find a GitHub repository URL in your issue text!"

Do I have to move the code from Bitbucket to a github repository, or is there another way I can submit?

Yes, it has to come from github.

Package development questions should be addressed to the bioc-devel mailing list; you must be subscribed to the list for posts to propagate.