bash -c 
echo "b40754f is a MERGE commit. Parents:"; git log -1 --format="  %H%n  parents: %P" b40754f
echo; echo "b40754f parents resolved:"; for p in $(git log -1 --format=%P b40754f); do git log -1 --format="  %h %ci %s" $p; done
echo; echo "tree diff  285166c .. b40754f  (empty = identical trees):"
git diff --stat 285166c b40754f || true
echo "[end diff]"
echo; echo "tree diff  24f7fb5 .. b40754f:"
git diff --stat 24f7fb5 b40754f | tail -5