test: additional housekeeping

Author: kuwv

test/test_commit_gpg.py

@@ -102,10 +102,10 @@ def test_commit_signing(gpgsigned):
     parents = ["8496071c1b46c854b31185ea97743be6a8774479"]
 
     # create commit string
-    commit = repo.create_commit_string(
+    commit_string = repo.create_commit_string(
         author, committer, message, tree, parents
     )
-    assert commit == content
+    assert commit_string == content
 
     # create/retrieve signed commit
     oid = repo.create_commit_with_signature(content, gpgsig)