Fix branch name for perf test on push

.github/workflows/perf_test.yml

@@ -17,16 +17,20 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Setup Environment (PR)
+      - name: Get relevant SHA (PR)
         if: ${{ github.event_name == 'pull_request' }}
         shell: bash
         run: |
           echo "LAST_COMMIT_SHA=${{ github.event.pull_request.head.sha }}" >> ${GITHUB_ENV}
-      - name: Setup Environment (Push)
+      - name: Get relevant SHA (Push)
         if: ${{ github.event_name == 'push' }}
         shell: bash
         run: |
           echo "LAST_COMMIT_SHA=${GITHUB_SHA}" >> ${GITHUB_ENV}
-      - run: rake docker_test_perf
+      - name: Get branch name
+        shell: bash
+        run: echo "BRANCH=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> ${GITHUB_ENV}
+      - name: Run perf test
+        run: rake docker_test_perf
         env:
           STATS_API_SECRET: ${{ secrets.STATS_API_SECRET }}

Rakefile

@@ -395,7 +395,7 @@ task docker_test_perf: :docker_build_clang_release do
   sh "docker run #{docker_run_flags} " \
      "-e STATS_API_SECRET=#{(ENV['STATS_API_SECRET'] || '').inspect} " \
      "-e GIT_SHA=#{(ENV['LAST_COMMIT_SHA'] || '').inspect} " \
-     "-e GIT_REF=#{(ENV['GITHUB_HEAD_REF'] || '').inspect} " \
+     "-e GIT_BRANCH=#{(ENV['BRANCH'] || '').inspect} " \
      '--rm ' \
      '--entrypoint rake ' \
      "natalie_clang_#{ruby_version_string}_release test_perf"

spec/support/test_perf.rb

@@ -26,7 +26,7 @@
 
 stats = {
   commit: ENV.fetch('GIT_SHA'),
-  branch: ENV.fetch('GIT_REF'),
+  branch: ENV.fetch('GIT_BRANCH'),
   ir: totals
 }