diff -r d23dc9509b0f -r e69dc67f79a5 mercurial/configitems.py
--- a/mercurial/configitems.py	Thu Feb 23 15:26:43 2023 +0100
+++ b/mercurial/configitems.py	Thu Feb 23 15:27:42 2023 +0100
@@ -1851,7 +1851,7 @@
 )
 coreconfigitem(
     b'paths',
-    b'.*',
+    b'[^:]*',
     default=None,
     generic=True,
 )