punk::repo::git_remote arg fix

src/modules/punk/repo-999999.0a1.0.tm

@@ -1240,7 +1240,7 @@ namespace eval punk::repo {
 
     #------------------------------------
     #limit to exec so full punk shell not required in scripts
-    proc git_revision {{path {}}} {
+    proc git_revision {{path ""}} {
         if {$path eq {}} { set path [pwd] }
         # ::kettle::path::revision.git
         do_in_path $path {
@@ -1254,7 +1254,7 @@ namespace eval punk::repo {
         }
         return [string trim $v]
     }
-    proc git_remote {{path {{}}}} {
+    proc git_remote {{path ""}} {
         if {$path eq {}} { set path [pwd] }
         do_in_path $path {
             try {