diff --git a/git/config.py b/git/config.py
@@ -549,11 +549,21 @@ def _included_paths(self) -> List[Tuple[str, str]]:
        :return:
            The list of paths, where each path is a tuple of (option, value).
        """
        paths = []

        for section in self.sections():
            if section == "include":
-                paths += self.items(section)

            match = CONDITIONAL_INCLUDE_REGEXP.search(section)
            if match is None or self._repo is None:
@@ -579,7 +589,7 @@ def _included_paths(self) -> List[Tuple[str, str]]:
                    )
                if self._repo.git_dir:
                    if fnmatch.fnmatchcase(os.fspath(self._repo.git_dir), value):
-                        paths += self.items(section)

            elif keyword == "onbranch":
                try:
@@ -589,11 +599,11 @@ def _included_paths(self) -> List[Tuple[str, str]]:
                    continue

                if fnmatch.fnmatchcase(branch_name, value):
-                    paths += self.items(section)
            elif keyword == "hasconfig:remote.*.url":
                for remote in self._repo.remotes:
                    if fnmatch.fnmatchcase(remote.url, value):
-                        paths += self.items(section)
                        break
        return paths