build: show more info about exported patches (#27148)

script/lib/git.py

@@ -276,7 +276,7 @@ def export_patches(repo, out_dir, patch_range=None, dry_run=False):
   if patch_range is None:
     patch_range, num_patches = guess_base_commit(repo)
     sys.stderr.write(
-        "Exporting {} patches since {}\n".format(num_patches, patch_range)
+        "Exporting {} patches in {} since {}\n".format(num_patches, repo, patch_range[0:7])
     )
   patch_data = format_patch(repo, patch_range)
   patches = split_patches(patch_data)