Fix pylint issues

Author: ben-edna

dfetch/project/git.py

@@ -78,7 +78,11 @@ def _fetch_impl(self, version: Version) -> Version:
         ]
 
         self._local_repo.checkout_version(
-            self.remote, rev_or_branch_or_tag, self.source, license_globs, self.ignore
+            remote=self.remote,
+            version=rev_or_branch_or_tag,
+            src=self.source,
+            must_keeps=license_globs,
+            ignore=self.ignore,
         )
 
         safe_rmtree(os.path.join(self.local_path, self._local_repo.METADATA_DIR))

dfetch/project/svn.py

@@ -49,7 +49,8 @@ def externals() -> List[External]:
         externals = []
         path_pattern = r"([^\s^-]+)\s+-"
         for entry in result.stdout.decode().split(os.linesep * 2):
-            match = None
+            match: Optional[re.Match[str]] = None
+            local_path: str = ""
             for match in re.finditer(path_pattern, entry):
                 pass
             if match:

dfetch/vcs/git.py

@@ -163,11 +163,12 @@ def is_git(self) -> bool:
 
     def checkout_version(  # pylint: disable=too-many-arguments
         self,
+        *,
         remote: str,
         version: str,
-        src: Optional[str],
-        must_keeps: Optional[List[str]],
-        ignore: Optional[Sequence[str]],
+        src: Optional[str] = None,
+        must_keeps: Optional[List[str]] = None,
+        ignore: Optional[Sequence[str]] = None,
     ) -> None:
         """Checkout a specific version from a given remote.