Fix issue with rebase format and message type

hellotech/.config/git/template/hooks/prepare-commit-msg

@@ -8,11 +8,20 @@ const exec = promisify(childProcess.exec);
 const readFile = promisify(fs.readFile);
 const writeFile = promisify(fs.writeFile);
 
-const [, , commitMsg, comitSrc, sha1] = process.argv;
+const [, , message, mode] = process.argv;
 
 async function main() {
-  const file = await readFile(commitMsg, { encoding: "utf8" });
-  const result = await exec("git symbolic-ref --short HEAD");
+  const file = await readFile(message, { encoding: "utf8" });
+  let result;
+  try {
+    result = await exec("git rev-parse --abbrev-ref HEAD");
+  } catch (err) {
+    return
+  }
+
+  if (message.match(/^#/)) {
+    return
+  }
 
   const tags = result.stdout
     .split("\n")
@@ -27,8 +36,12 @@ async function main() {
   if (tags.find(tag => file.includes(tag))) {
     return;
   }
-  const newFile = "\n\n# " + tags.join(" ") + "\n" + file;
-  await writeFile(commitMsg, newFile);
+
+  const newFile = mode === 'message'
+    ? file + '\n\n'  + tags.join(" ")
+    : `\n\n# ` + tags.join(" ") + "\n" + file;
+
+  await writeFile(message, newFile);
 }
 
 main().catch(err => {