Use Exit() instead of Panic() for validation

commands/command_fetch.go

@@ -29,14 +29,14 @@ func fetchCommand(cmd *cobra.Command, args []string) {
 	if len(args) > 0 {
 		// Remote is first arg
 		if err := git.ValidateRemote(args[0]); err != nil {
-			Panic(err, fmt.Sprintf("Invalid remote name '%v'", args[0]))
+			Exit("Invalid remote name %q", args[0])
 		}
 		lfs.Config.CurrentRemote = args[0]
 	} else {
 		// Actively find the default remote, don't just assume origin
 		defaultRemote, err := git.DefaultRemote()
 		if err != nil {
-			Panic(err, "No default remote")
+			Exit("No default remote")
 		}
 		lfs.Config.CurrentRemote = defaultRemote
 	}