From 70d2945de4350adb7202bedae19c6b6c90d80120 Mon Sep 17 00:00:00 2001
From: Roman Kishchenko <rkishchenko@gmail.com>
Date: Tue, 15 Sep 2020 18:47:20 +0300
Subject: [PATCH] feat: support cross-repository branch reference (#14)

---
 action.yml | 4 +++-
 index.js   | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/action.yml b/action.yml
index b6e6a748..1983d870 100644
--- a/action.yml
+++ b/action.yml
@@ -9,7 +9,9 @@ inputs:
     description: 'GitHub Token'
     required: true
   branch:
-    description: 'Branch name'
+    description: |
+      The name of the branch from which the pull request was opened. For cross-repository pull requests namespace the
+      branch with user or organization name, i.e. 'user:branch-name' or 'org:branch-name'.
     required: false
   base:
     description: 'The base branch name of the Pull Request'
diff --git a/index.js b/index.js
index 221eccd5..4ae89567 100644
--- a/index.js
+++ b/index.js
@@ -13,7 +13,7 @@ const main = async () => {
     state: 'open'
   }
   if (branch) {
-    query.head = `${context.repo.owner}:${branch}`
+    query.head = branch.indexOf(':') === -1 ? `${context.repo.owner}:${branch}` : branch
   }
   if (base) {
     query.base = base