convert: clear the dirstate before a conversion, invalidate it afterwards Clearing it before the conversion protects us from whatever data were there (file copies in particular). Invalidating it after the conversion avoids writing a possibly inconsistent dirstate to disk.

#!/bin/sh

hg init a
echo a > a/a
hg --cwd a ci -A -m a
hg clone a b
echo b > b/b
hg --cwd b ci -A -m b
chmod 100 a/.hg/store
hg --cwd b push ../a
chmod 700 a/.hg/store