fix: switch base to point to base.ref over main branching point

Author: meeroslav

dist/index.js

@@ -29960,8 +29960,7 @@ let BASE_SHA;
     let HEAD_SHA = headResult.stdout;
     if (['pull_request', 'pull_request_target'].includes(eventName) &&
         !github.context.payload.pull_request.merged) {
-        const baseResult = (0, child_process_1.spawnSync)('git', ['merge-base', `origin/${mainBranchName}`, 'HEAD'], { encoding: 'utf-8' });
-        BASE_SHA = baseResult.stdout;
+        BASE_SHA = github.context.payload[eventName].base.ref;
     }
     else if (eventName == 'merge_group') {
         const baseResult = (0, child_process_1.spawnSync)('git', ['rev-parse', 'HEAD^1'], {

find-successful-workflow.ts

@@ -42,12 +42,7 @@ let BASE_SHA: string;
     ['pull_request', 'pull_request_target'].includes(eventName) &&
     !github.context.payload.pull_request.merged
   ) {
-    const baseResult = spawnSync(
-      'git',
-      ['merge-base', `origin/${mainBranchName}`, 'HEAD'],
-      { encoding: 'utf-8' },
-    );
-    BASE_SHA = baseResult.stdout;
+    BASE_SHA = github.context.payload[eventName].base.ref;
   } else if (eventName == 'merge_group') {
     const baseResult = spawnSync('git', ['rev-parse', 'HEAD^1'], {
       encoding: 'utf-8',