Add Interactively Unstage Changes as a git til

git/interactively-unstage-changes.md

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+# Interactively Unstage Changes
+
+I often use `git add --patch` to interactively stage changes for a commit.
+Git takes me through changes to tracked files piece by piece to check if I
+want to stage them. This same interactive _staging_ of files can be used in
+reverse when removing changes from the index. Just add the `--patch` flag.
+
+You can use it for a single file
+
+```bash
+$ git reset --patch README.md
+```
+
+or you can let it operate on the entire repository
+
+```bash
+$ git reset --patch
+```
+
+This is useful when you've staged part of a file for a commit and then
+realize that some of those changes shouldn't be committed.