Brew: How to use brew on macos 10.15 beta?

[kantin13]

Hello,
I would like to install packages with brew but i switched to macos 10.15 and i have a message:
Error: You are using macOS 10.15.
We do not provide support for this pre-release version.
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Discourse, Twitter or IRC. You are responsible for resolving any issues you
experience, as you are running this pre-release version.

[close-issue-app[bot]]

From the issue template:

Please note that we will close your issue without comment if you delete, do not read or do not fill out the issue checklist below and provide ALL the requested information. If you repeatedly fail to use the issue template, we will block you from ever submitting issues to Homebrew again.

If you add the necessary information to this issue (don't create a new one, please) then this issue may be reopened.