Decoding git command output with non-utf8 data should be handled nicely

NO_JIRA

Author: siong-chin

main/githooks.py

@@ -58,7 +58,7 @@
 
 
 def _get_output(command, cwd='.'):
-    return subprocess.check_output(command, shell=True, cwd=cwd).decode()
+    return subprocess.check_output(command, shell=True, cwd=cwd).decode(errors='replace')
 
 
 def _is_github_event():