remote-helpers: improve marks usage

diff --git a/contrib/remote-helpers/git-remote-hg b/contrib/remote-helpers/git-remote-hg
index bd545aa380d3751fdfbc416cb20947035bb4ec8b..1e61f4327a338dc406958e68b0c2563bddbc6744 100755 (executable)
--- a/contrib/remote-helpers/git-remote-hg
+++ b/contrib/remote-helpers/git-remote-hg
@@ -165,7 +165,7 @@ class Marks:
         return self.marks[rev]
 
     def to_rev(self, mark):
-        return self.rev_marks[mark]
+        return str(self.rev_marks[mark])
 
     def next_mark(self):
         self.last_mark += 1
@@ -185,7 +185,10 @@ class Marks:
         return rev in self.marks
 
     def get_tip(self, branch):
-        return self.tips.get(branch, None)
+        try:
+            return str(self.tips[branch])
+        except KeyError:
+            return None
 
     def set_tip(self, branch, tip):
         self.tips[branch] = tip