build: get current release branch from commit (#18834)

* chore: get current release branch from commit

* love too lint

script/lib/utils.js

@@ -24,20 +24,27 @@ function getAbsoluteElectronExec () {
   return path.resolve(__dirname, '../../..', getElectronExec())
 }
 
-async function getCurrentBranch (gitDir) {
-  const gitArgs = ['rev-parse', '--abbrev-ref', 'HEAD']
-  const branchDetails = await GitProcess.exec(gitArgs, gitDir)
-  if (branchDetails.exitCode === 0) {
-    const currentBranch = branchDetails.stdout.trim()
-    console.log(`${pass} current git branch is: ${currentBranch}`)
-    return currentBranch
+async function handleGitCall (args, gitDir) {
+  const details = await GitProcess.exec(args, gitDir)
+  if (details.exitCode === 0) {
+    return details.stdout.trim()
   } else {
-    const error = GitProcess.parseError(branchDetails.stderr)
-    console.log(`${fail} couldn't get details current branch: `, error)
+    const error = GitProcess.parseError(details.stderr)
+    console.log(`${fail} couldn't parse git process call: `, error)
     process.exit(1)
   }
 }
 
+async function getCurrentBranch (gitDir) {
+  let branch = await handleGitCall(['rev-parse', '--abbrev-ref', 'HEAD'], gitDir)
+  if (!branch.match(/[0-9]+-[0-9]+-x/)) {
+    const lastCommit = await handleGitCall(['rev-parse', 'HEAD'], gitDir)
+    const branches = (await handleGitCall(['branch', '--contains', lastCommit], gitDir)).split('\n')
+    branch = branches.filter(b => b.match(/[0-9]+-[0-9]+-x/))[0].trim()
+  }
+  return branch
+}
+
 module.exports = {
   getCurrentBranch,
   getElectronExec,