have test results grouped by hash first

diff --git a/all-tests b/all-tests
index 593d4f9..404f82a 100755 (executable)
--- a/all-tests
+++ b/all-tests
@@ -20,7 +20,7 @@ echo $COMMAND | grep -q 3 && { PYTHON=python3; version=3; }
 hash=$(git log -n 1 | head -1 | sed -e 's,commit ,,' -e 's,\(........\).*,\1,')
 
 # compute output file name
-output="zz.py$version.$hash"
+output="zz.$hash.py$version"
 
 # if there is any pending change, use another name
 is_pristine=""