diff --git a/commands/misc.ipynb b/commands/misc.ipynb
index eb017fb..bdaa638 100644
--- a/commands/misc.ipynb
+++ b/commands/misc.ipynb
@@ -267,6 +267,9 @@
     "# commit log message are all there at the top of the patch.\n",
     "!git format-patch origin/master\n",
     "\n",
+    "# Clean up .git folder:\n",
+    "!git repack -a -d --depth=250 --window=250\n",
+    "\n",
     "# GitHub tutorial:\n",
     "http://try.github.io/levels/1/challenges/9\n",
     "\n",