feat(junit): return ref head name

Change-Id: Ia7d95b17f09bbde2531a4fb6fafb65d4cfb729af

Author: jd

mergify_cli/ci/detector.py

@@ -28,6 +28,16 @@ def get_job_name() -> str | None:
     return None
 
 
+def get_head_ref_name() -> str | None:
+    match get_ci_provider():
+        case "github_actions":
+            return os.getenv("GITHUB_HEAD_REF") or os.getenv("GITHUB_REF")
+        case "circleci":
+            return os.getenv("CIRCLE_BRANCH")
+        case _:
+            return None
+
+
 def get_github_actions_head_sha() -> str | None:
     if os.getenv("GITHUB_EVENT_NAME") == "pull_request":
         # NOTE(leo): we want the head sha of pull request

mergify_cli/ci/junit.py

@@ -76,6 +76,9 @@ async def junit_to_spans(
     if (head_revision := (await detector.get_head_sha())) is not None:
         resource_attributes[vcs_attributes.VCS_REF_HEAD_REVISION] = head_revision
 
+    if (head_ref_name := detector.get_head_ref_name()) is not None:
+        resource_attributes[vcs_attributes.VCS_REF_HEAD_NAME] = head_ref_name
+
     if (provider := detector.get_ci_provider()) is not None:
         resource_attributes["cicd.provider.name"] = provider