fix: handle merge_group github events

if we get a branch with gh-readonly-queue, it comes from a merge queue
and the actual branch name is located in the middle

Author: joseph-sentry

codecov_cli/helpers/ci_adapters/github_actions.py

@@ -67,20 +67,21 @@ def _get_slug(self):
 
     def _get_branch(self):
         branch = os.getenv("GITHUB_HEAD_REF")
-        if branch:
-            return branch
 
-        branch_ref = os.getenv("GITHUB_REF")
+        if branch is None:
+            branch = os.getenv("GITHUB_REF")
 
-        if not branch_ref:
-            return None
+            if branch is None:
+                return None
 
-        match = re.search(r"refs/heads/(.*)", branch_ref)
+            match = re.search(r"refs/heads/(.*)", branch)
+            if match is None:
+                return None
+            branch = match.group(1)
 
-        if match is None:
-            return None
+        if branch and branch.startswith("gh-readonly-queue/"):
+            return branch.split("/")[1]
 
-        branch = match.group(1)
         return branch or None
 
     def _get_service(self):

tests/ci_adapters/test_ghactions.py

@@ -207,6 +207,12 @@ def test_slug(self, env_dict, expected, mocker):
             ({GithubActionsEnvEnum.GITHUB_REF: r"doesn't_match"}, None),
             ({GithubActionsEnvEnum.GITHUB_REF: r"refs/heads/"}, None),
             ({GithubActionsEnvEnum.GITHUB_REF: r"refs/heads/abc"}, "abc"),
+            (
+                {
+                    GithubActionsEnvEnum.GITHUB_REF: r"refs/heads/gh-readonly-queue/abc/pr-name-number"
+                },
+                "abc",
+            ),
         ],
     )
     def test_branch(self, env_dict, expected, mocker):