diff --git a/cmd/dev/dev_push.go b/cmd/dev/dev_push.go
index 6a401c9b..398af28b 100644
--- a/cmd/dev/dev_push.go
+++ b/cmd/dev/dev_push.go
@@ -141,7 +141,9 @@ func runPush(registryPath string, force bool) error {
 			succeeded++
 		} else {
 			// Check if this is a non-fast-forward error (diverged branch)
-			if git.IsNonFastForward(r.Error) {
+			isNFF := git.IsNonFastForward(r.Error)
+			fmt.Fprintf(os.Stderr, "[DEBUG] IsNonFastForward=%v, err=%q\n", isNFF, r.Error)
+			if isNFF {
 				fmt.Printf("  %s %s: %s\n", warningStyle.Render("!"), r.Name, i18n.T("cmd.dev.push.diverged"))
 				divergedRepos = append(divergedRepos, r)
 			} else {