Fix wrong branch name handling fork PR (#48)

* Fix wrong branch name when uploading PR results

Signed-off-by: Huy Do <huydhn@gmail.com>

* [no ci] Does this work?

Signed-off-by: Huy Do <huydhn@gmail.com>

* [no ci] Ready for review

Signed-off-by: Huy Do <huydhn@gmail.com>

---------

Signed-off-by: Huy Do <huydhn@gmail.com>

Author: huydhn

.github/scripts/upload_benchmark_results.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 
+import itertools
 import requests
 import glob
 import gzip
@@ -133,7 +134,7 @@ def get_git_metadata(repo_dir: str) -> Tuple[str, str]:
         )
     except TypeError as e:
         # This is a detached HEAD, try to find out where the commit comes from
-        for head in repo.heads:
+        for head in itertools.chain(repo.heads, repo.refs):
             info(f"Check commits from {head.name}")
             for commit in repo.iter_commits(head):
                 if commit.hexsha == hexsha: