Use wsgi.url_scheme instead of ad-hoc CGI checks. Instead of each place in hgweb_mod that needs to check for SSL or get the protocol scheme (http vs. https) doing it ad-hoc, make them just look at the wsgi.url_scheme which because of previous patches is now always set correctly.

#!/bin/sh

mkdir a
cd a
hg init
echo 123 > a
hg add a
hg commit -m "a" -u a -d "1000000 0"

cd ..
mkdir b
cd b
hg init
echo 321 > b
hg add b
hg commit -m "b" -u b -d "1000000 0"

hg pull ../a
hg pull -f ../a
hg heads