Update build_database.py

Author: Coding4Hours

build_database.py

@@ -6,7 +6,7 @@
 
 root = pathlib.Path(__file__).parent.resolve()
 
-def created_changed_times(repo_path, ref="master"):
+def created_changed_times(repo_path, ref="main"):
     created_changed_times = {}
     repo = git.Repo(repo_path, odbt=git.GitDB)
     commits = reversed(list(repo.iter_commits(ref)))