# 
# 
# patch "tracvc/mtn/backend.py"
#  from [4c6a790e23ec8e26e5838849a82848ca6a46878f]
#    to [5ef49ca480f7b38db93ab4041a5f0ddafcfa9c74]
# 
============================================================
--- tracvc/mtn/backend.py	4c6a790e23ec8e26e5838849a82848ca6a46878f
+++ tracvc/mtn/backend.py	5ef49ca480f7b38db93ab4041a5f0ddafcfa9c74
@@ -212,6 +212,8 @@
         
         """
         if rev != None:
+            if isinstance(rev, unicode):
+                rev = rev.encode('ascii')
             revs = self.mtn.select(rev)
             rev = revs and revs[0] or None
         return rev