[Fix #357] Set alias gcO to check out hunks interactively

modules/git/README.md

@@ -53,7 +53,7 @@ Aliases
   - `gca` stages all modified and deleted files.
   - `gcm` records changes to the repository with the given message.
   - `gco` checks out a branch or paths to work tree.
-  - `gcO` checks out paths to work tree using the *HEAD* commit.
+  - `gcO` checks out hunks from the index or the tree interactively.
   - `gcf` amends the tip of the current branch using the same log message as
     *HEAD*.
   - `gcF` amends the tip of the current branch.

modules/git/alias.zsh

@@ -46,7 +46,7 @@ alias gc='git commit'
 alias gca='git commit --all'
 alias gcm='git commit --message'
 alias gco='git checkout'
-alias gcO='git checkout HEAD --'
+alias gcO='git checkout --patch'
 alias gcf='git commit --amend --reuse-message HEAD'
 alias gcF='git commit --amend'
 alias gcp='git cherry-pick --ff'