Fix up some code after aplanas' continued review

lib/git_exporter.py

@@ -1,5 +1,6 @@
 import logging
 import os
+from pathlib import Path
 
 import yaml
 
@@ -121,10 +122,8 @@ class GitExporter:
             logging.debug(f"Committing {flat}")
             self.commit_flat(db, flat, branch_state)
 
-    def limit_download(self, file):
-        if file.endswith(".spec") or file.endswith(".changes"):
-            return True
-        return False
+    def limit_download(self, file: Path):
+        return file.suffix in (".spec", ".changes")
 
     def commit_flat(self, db, flat, branch_state):
         parents = []
@@ -144,7 +143,7 @@ class GitExporter:
             self.obs.download(
                 flat.commit.project,
                 flat.commit.package,
-                file,
+                file.name,
                 flat.commit.expanded_srcmd5,
                 self.git.path,
                 file_md5=md5,