fix bug

routers/repo/pull.go

@@ -105,6 +105,7 @@ func getForkRepository(ctx *context.Context) *models.Repository {
 		return nil
 	}
 	ctx.Data["ForkFrom"] = forkRepo.Owner.Name + "/" + forkRepo.Name
+	ctx.Data["ForkDisplayName"] = forkRepo.FullDisplayName()
 	ctx.Data["ForkFromOwnerID"] = forkRepo.Owner.ID
 
 	if err := ctx.User.GetOwnedOrganizations(); err != nil {