fix 'convert' with single commit repositories The attached patch passes the three 'convert' testcases, and also is able to successfully convert the git.git repository.

#!/bin/sh

hg init
mkfifo p

hg serve --stdio < p &
P=$!
(echo lock; echo addchangegroup; sleep 5) > p &
Q=$!
sleep 3
kill -HUP $P
wait
echo .hg/* .hg/store/*