fix: use current branch templates for PR runs

lib/issues.js

@@ -39,7 +39,8 @@ module.exports.stringifiedIssueTemplate = async function stringifiedIssueTemplat
   const response = await client.repos.getContents({
     owner: options.owner,
     repo: options.repo,
-    path: `.github/ISSUE_TEMPLATE/${options.template}`
+    path: `.github/ISSUE_TEMPLATE/${options.template}`,
+    ref: options.ref || 'main'
   })
 
   // check that we're not trying to parse a file that doesn't exist. If we are, throw.

run.js

@@ -1,4 +1,5 @@
 'use strict'
+const util = require('node:util')
 const core = require('@actions/core')
 const github = require('@actions/github')
 const list = require('safe-parse-list')
@@ -71,7 +72,8 @@ const conversions = require('./lib/conversions')
       try {
         const userProvidedIssueTemplate = await issues.stringifiedIssueTemplate(client, {
           ...repo,
-          template: issueTemplate
+          template: issueTemplate,
+          ref: github.context.payload?.pull_request?.head?.ref || github.context.payload?.repository?.default_branch || 'main'
         })
         template = conversions.convert(userProvidedIssueTemplate)
         template = ejs.compile(userProvidedIssueTemplate)