Method Set

reference.go:36–67

Set creates or updates the reference to point to sha. If force is true and the reference exists, Set updates it even if the update is not a fast-forward.

(ctx context.Context, sha string, force bool)

// the reference exists, Set updates it even if the update is not a
// fast-forward.
func (r *Reference) Set(ctx context.Context, sha string, force bool) error {
	// Test for existence because update and create return 422 responses if the
	// the ref is missing or exists, respectively. The same code is also used
	// for other errors like passing a bad SHA, so our only other option is to
	// parse the string message, which is fragile.
	var exists bool
	if _, _, err := r.client.Git.GetRef(ctx, r.owner, r.repo, r.ref); err != nil {
		if rerr, ok := err.(*github.ErrorResponse); !ok || rerr.Response.StatusCode != 404 {
			return fmt.Errorf("get ref failed: %w", err)
		}
	} else {
		exists = true
	}

	if exists {
		if _, _, err := r.client.Git.UpdateRef(ctx, r.owner, r.repo, r.ref, github.UpdateRef{
			SHA:   sha,
			Force: github.Ptr(force),
		}); err != nil {
			return fmt.Errorf("update ref failed: %w", err)
		}
	} else {
		if _, _, err := r.client.Git.CreateRef(ctx, r.owner, r.repo, github.CreateRef{
			Ref: r.ref,
			SHA: sha,
		}); err != nil {
			return fmt.Errorf("create ref failed: %w", err)
		}
	}

	return nil
}

// PullRequest create a new pull request for the reference. The reference must
// be a branch (start with "refs/heads/".) The pull request takes values from