git find which files and folders are currently in the index
git ls-files [-z] [-t] [-v] [-f]
(--[cached|deleted|others|ignored|stage|unmerged|killed|modified])*
(-[c|d|o|i|s|u|k|m])*
[--eol]
[--deduplicate]
[-x <pattern>|--exclude=<pattern>]
[-X <file>|--exclude-from=<file>]
[--exclude-per-directory=<file>]
[--exclude-standard]
[--error-unmatch] [--with-tree=<tree-ish>]
[--full-name] [--recurse-submodules]
[--abbrev[=<n>]] [--] [<file>…]