Bug 1949573 - [lint] Capture output when setting up l10n repo, r=linter-reviewers,sylvestre

Differential Revision: https://phabricator.services.mozilla.com/D239010

tools/lint/python/l10n_lint.py

@@ -3,8 +3,8 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import os
+import subprocess
 from datetime import datetime, timedelta
-from subprocess import check_call
 
 from compare_locales import parser
 from compare_locales.lint.linter import L10nLinter
@@ -112,10 +112,20 @@ def source_repo_setup(**lint_args):
     if "GIT_INDEX_FILE" in os.environ:
         os.environ.pop("GIT_INDEX_FILE")
 
+    kwargs = {
+        "check": False,
+        "stdout": subprocess.PIPE,
+        "stderr": subprocess.STDOUT,
+    }
     if os.path.exists(gs):
-        check_call([git, "pull", L10N_SOURCE_REPO], cwd=gs)
+        proc = subprocess.run([git, "pull", L10N_SOURCE_REPO], cwd=gs, **kwargs)
     else:
-        check_call([git, "clone", L10N_SOURCE_REPO, gs])
+        proc = subprocess.run([git, "clone", L10N_SOURCE_REPO, gs], **kwargs)
+
+    if proc.returncode != 0:
+        lint_args["log"].error(f"Failed to pull {L10N_SOURCE_REPO}:\n{proc.stdout}")
+        return 1
+
     with open(marker, "w") as fh:
         fh.flush()