[tooling] Fix commit stamping on release

vrobbler/context_processors.py

@@ -14,11 +14,12 @@ def version_info(request):
     if not commit:
         # Try to import from _commit.py module first
         try:
-            from vrobbler._commit import commit
+            from vrobbler._commit import commit as _commit
         except ImportError:
             pass
         else:
-            return {"app_version": app_version, "git_commit": commit}
+            if _commit and _commit != "unknown":
+                return {"app_version": app_version, "git_commit": _commit}
 
         # Try to read from commit file (written during deploy)
         commit_file = Path("/var/lib/vrobbler/commit.txt")