diff -r dff19fe2973c -r 8be95673eb8a mercurial/hg.py
--- a/mercurial/hg.py	Wed May 05 17:47:30 2021 -0400
+++ b/mercurial/hg.py	Fri May 07 10:39:58 2021 +0200
@@ -1053,7 +1053,7 @@
             # as the only "bad" outcome would be some slowness. That potential
             # slowness already affect reader.
             with destrepo.lock():
-                destrepo.updatecaches(full=True)
+                destrepo.updatecaches(full=b"post-clone")
     finally:
         release(srclock, destlock)
         if cleandir is not None: