build: use "x-access-token" as username
diff --git a/internal/pkg/image_repositories/image_repository.go b/internal/pkg/image_repositories/image_repository.go
index 3161223..94a8093 100644
--- a/internal/pkg/image_repositories/image_repository.go
+++ b/internal/pkg/image_repositories/image_repository.go
@@ -41,7 +41,8 @@
 		githubClient:      github.NewClient(tc),
 		githubProjectName: fmt.Sprintf("docker-openstack-%s", project),
 		gitAuth: &git_http.BasicAuth{
-			Username: githubToken,
+			Username: "x-access-token",
+			Password: githubToken,
 		},
 	}
 }