diff --git a/src/centpkg/__init__.py b/src/centpkg/__init__.py
index 21c6827..1ed0757 100644
--- a/src/centpkg/__init__.py
+++ b/src/centpkg/__init__.py
@@ -101,6 +101,7 @@ class Commands(Commands):
         # For MD5 we want to use the old format of source files, the BSD format
         # should only be used when configured for SHA512
         self.source_entry_type = 'bsd' if self.lookasidehash != 'md5' else 'old'
+        self.branchre = 'c\d{1,}(s)?(tream)?|master'
 
     @property
     def distgitdir(self):