diff --git a/lib/spack/spack/test/spec_yaml.py b/lib/spack/spack/test/spec_yaml.py
index 36a4fb15ab6..59f4846deac 100644
--- a/lib/spack/spack/test/spec_yaml.py
+++ b/lib/spack/spack/test/spec_yaml.py
@@ -96,8 +96,8 @@ def test_invalid_json_spec(invalid_json, error_message):
         # Virtuals on edges
         "callpath",
         "mpileaks",
-        # all types of git versions
-        # ensure that we try to serialize all the things that might be in the node dict,
+        # Vvarious types of git versions
+        # Ensure that we try to serialize all the things that might be in the node dict,
         # e.g., submodule callbacks can fail serialization if they're not fully resolved.
         "git-url-top-level@develop",
         "git-url-top-level@submodules",
@@ -107,10 +107,9 @@ def test_invalid_json_spec(invalid_json, error_message):
         "git-url-top-level@3.2",
         "git-url-top-level@3.1",
         "git-url-top-level@3.0",
+        # URL versions with checksums
         "git-url-top-level@2.3",
-        "git-url-top-level@2.2",
         "git-url-top-level@2.1",
-        "git-url-top-level@2.0",
     ],
 )
 def test_roundtrip_concrete_specs(abstract_spec, default_mock_concretization):