====================
TODO: dangling objects, git gc, git repack.
+https://gcc.gnu.org/ml/gcc/2007-12/msg00165.html
Tips and tricks
TODO: sticky options; example: git grep -O.
+TODO: tricky options; example: git log -p3.
+
TODO: bash/zsh completion, bash/zsh prompt.
+https://git.kernel.org/cgit/git/git.git/tree/contrib/completion
git on server