[seq2seq] get_git_info fails gracefully (#7843)

Co-authored-by: Sam Shleifer <sshleifer@gmail.com>

examples/seq2seq/utils.py

@@ -457,6 +457,7 @@ def load_json(path):
 
 
 def get_git_info():
+    try:
         repo = git.Repo(search_parent_directories=True)
         repo_infos = {
             "repo_id": str(repo),
@@ -465,6 +466,13 @@ def get_git_info():
             "hostname": str(socket.gethostname()),
         }
         return repo_infos
+    except TypeError:
+        return {
+            "repo_id": None,
+            "repo_sha": None,
+            "repo_branch": None,
+            "hostname": None,
+        }
 
 
 ROUGE_KEYS = ["rouge1", "rouge2", "rougeL", "rougeLsum"]