1 files changed, 8 insertions, 0 deletions
diff --git a/plumbing/object/commitnode_object.go b/plumbing/object/commitnode_object.go
index 52316f8..9ac42d2 100644
--- a/plumbing/object/commitnode_object.go
+++ b/plumbing/object/commitnode_object.go
@@ -1,6 +1,7 @@
 package object
 
 import (
+	"math"
 	"time"
 
 	"gopkg.in/src-d/go-git.v4/plumbing"
@@ -76,6 +77,13 @@ func (c *objectCommitNode) ParentHashes() []plumbing.Hash {
 	return c.commit.ParentHashes
 }
 
+func (c *objectCommitNode) Generation() uint64 {
+	// Commit nodes representing objects outside of the commit graph can never
+	// be reached by objects from the commit-graph thus we return the highest
+	// possible value.
+	return math.MaxUint64
+}
+
 func (c *objectCommitNode) Commit() (*Commit, error) {
 	return c.commit, nil
 }