--- a/tests/test-http
+++ b/tests/test-http
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+cp "$TESTDIR"/printenv.py .
+
 hg init test
 cd test
 echo foo>foo
@@ -31,6 +33,6 @@ cd ..
 echo % pull
 cd copy-pull
 echo '[hooks]' >> .hg/hgrc
-echo 'changegroup = echo changegroup: u=$HG_URL' >> .hg/hgrc
+echo 'changegroup = python ../printenv.py changegroup' >> .hg/hgrc
 hg pull
 cd ..