doc: clarify return values of Pull/Fetch. (#205)

1 files changed, 2 insertions, 0 deletions

diff --git a/remote.go b/remote.go
index e8d56fc..1894fdc 100644
--- a/remote.go
+++ b/remote.go
@@ -46,6 +46,8 @@ func (r *Remote) String() string {
 }
 
 // Fetch fetches references from the remote to the local repository.
+// Returns nil if the operation is successful, NoErrAlreadyUpToDate if there are
+// no changes to be fetched, or an error.
 func (r *Remote) Fetch(o *FetchOptions) error {
 	_, err := r.fetch(o)
 	return err