# Publishing upstream

> Opening a pull request / merge request in the source repository.

After approval, Buff publishes the changes **upstream**.

- For each changed module the provider is shown (**GitHub PR / GitLab MR / Bitbucket PR / Gitea PR** — Forgejo is shown as Gitea) along with the upstream.
- Access is pre-checked; if a token is missing, there is a link to [Settings](/en/docs/settings).
- For repositories connected through the [connector](/en/docs/connector) (self-hosted git behind a firewall), the PR/MR is opened by the agent in your network — the access token stays with you and is not stored by us.
- You can choose the **target branch**.

The **“Approve and create PR/MR”** button opens a pull request / merge request in your repositories; our temporary PRs are closed at the same time. You do the merge.