Method fetchAndUpdateReferences

repository.go:1065–1103

(
	ctx context.Context, o *FetchOptions, ref plumbing.ReferenceName,
)

}

func (r *Repository) fetchAndUpdateReferences(
	ctx context.Context, o *FetchOptions, ref plumbing.ReferenceName,
) (*plumbing.Reference, error) {

	if err := o.Validate(); err != nil {
		return nil, err
	}

	remote, err := r.Remote(o.RemoteName)
	if err != nil {
		return nil, err
	}

	objsUpdated := true
	remoteRefs, err := remote.fetch(ctx, o)
	if err == NoErrAlreadyUpToDate {
		objsUpdated = false
	} else if err == packfile.ErrEmptyPackfile {
		return nil, ErrFetching
	} else if err != nil {
		return nil, err
	}

	resolvedRef, err := expand_ref(remoteRefs, ref)
	if err != nil {
		return nil, err
	}

	refsUpdated, err := r.updateReferences(remote.c.Fetch, resolvedRef)
	if err != nil {
		return nil, err
	}

	if !objsUpdated && !refsUpdated {
		return nil, NoErrAlreadyUpToDate
	}

	return resolvedRef, nil
}

func (r *Repository) updateReferences(spec []config.RefSpec,
	resolvedRef *plumbing.Reference) (updated bool, err error) {