增加了git功能，但是还未完善

node_modules/clean-git-ref/lib/index.js

@@ -0,0 +1,33 @@
+'use strict';
+
+function escapeRegExp(string) {
+  return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
+}
+
+function replaceAll(str, search, replacement) {
+  search = search instanceof RegExp ? search : new RegExp(escapeRegExp(search), 'g');
+
+  return str.replace(search, replacement);
+}
+
+var CleanGitRef = {
+  clean: function clean(value) {
+    if (typeof value !== 'string') {
+      throw new Error('Expected a string, received: ' + value);
+    }
+
+    value = replaceAll(value, './', '/');
+    value = replaceAll(value, '..', '.');
+    value = replaceAll(value, ' ', '-');
+    value = replaceAll(value, /^[~^:?*\\\-]/g, '');
+    value = replaceAll(value, /[~^:?*\\]/g, '-');
+    value = replaceAll(value, /[~^:?*\\\-]$/g, '');
+    value = replaceAll(value, '@{', '-');
+    value = replaceAll(value, /\.$/g, '');
+    value = replaceAll(value, /\/$/g, '');
+    value = replaceAll(value, /\.lock$/g, '');
+    return value;
+  }
+};
+
+module.exports = CleanGitRef;