def exit_mut()

in sync/meta.py [0:0]
45 lines of code
6 McCabe index (conditional complexity)

    def exit_mut(self) -> None:
        ref_name = self.process_name.path()
        message = "Gecko sync update"
        retry = 0
        MAX_RETRY = 5
        err = None
        while retry < MAX_RETRY:
            newrelic.agent.record_custom_event("metadata_update", params={})

            self.repo.remotes.origin.fetch()
            self.pygit2_repo.create_reference(ref_name,
                                              self.pygit2_repo.revparse_single(
                                                  "origin/%s" % self.branch).id,
                                              True)
            commit_builder = CommitBuilder(self.repo,
                                           message,
                                           ref=ref_name)
            with commit_builder as builder:
                self.metadata.writer = GitWriter(builder)
                self.metadata.write()
            assert commit_builder.commit is not None
            if not commit_builder.commit.is_empty():
                logger.info("Pushing metadata commit %s" % commit_builder.commit.sha1)
                remote_ref = self.get_remote_ref()
                try:
                    self.repo.remotes.origin.push(f"{ref_name}:refs/heads/{remote_ref}")
                except git.GitCommandError:
                    err = sys.exc_info()
                else:
                    if self.create_pr:
                        self.github.create_pull(message,
                                                "Update from bug %s" % self.process_name.obj_id,
                                                self.branch,
                                                remote_ref)
                    err = None
                    break
                retry += 1
            else:
                break

        if err:
            newrelic.agent.record_exception(*err, params={
                "ref_name": ref_name
            })
        else:
            self.pygit2_repo.references.delete(ref_name)
        self.metadata.writer = NullWriter()