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-rw-r--r--git/objects/submodule/util.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/git/objects/submodule/util.py b/git/objects/submodule/util.py
index 0b4ce3c5..045fb47d 100644
--- a/git/objects/submodule/util.py
+++ b/git/objects/submodule/util.py
@@ -65,7 +65,7 @@ class SubmoduleConfigParser(GitConfigParser):
the first write operation begins"""
self._smref = weakref.ref(submodule)
- def flush_to_index(self):
+ def flush_to_index(self) -> None:
"""Flush changes in our configuration file to the index"""
assert self._smref is not None
# should always have a file here