diff --git a/assignment_submission_checker/assignment.py b/assignment_submission_checker/assignment.py
index 0263e1d..017c721 100644
--- a/assignment_submission_checker/assignment.py
+++ b/assignment_submission_checker/assignment.py
@@ -166,7 +166,7 @@ def parse_into_output(
                 "Information reported here does not invalidate the submission, "
                 "though you may wish to check you expect everything here to apply "
                 "to your submission.\n\t"
-            ) + "\n".join(s.replace("\n", "\n\t") for s in information)
+            ) + "\n\t".join(s.replace("\n", "\n\t") for s in information)
 
         if (not fatal_str) and (not warnings_str) and (not information_str):
             return f"{heading_str}\nSubmission format matches specifications, nothing further to report."
diff --git a/assignment_submission_checker/cli_main.py b/assignment_submission_checker/cli_main.py
index 65b2807..7785974 100644
--- a/assignment_submission_checker/cli_main.py
+++ b/assignment_submission_checker/cli_main.py
@@ -1,3 +1,4 @@
+import shutil
 from pathlib import Path
 from tempfile import mkdtemp
 from typing import Optional
@@ -31,6 +32,13 @@ def fetch_spec(assignment_spec: str) -> None:
     return r.text
 
 
+def infer_repo_name(repo: Repo) -> str:
+    """
+    Attempt to infer the name of a repository cloned from GitHub.
+    """
+    return repo.remotes.origin.url.split(".git")[0].split("/")[-1]
+
+
 def main(
     assignment_lookup: Optional[str] = None,
     github_clone_url: Optional[str] = None,
@@ -51,10 +59,20 @@ def main(
     if github_clone_url is not None:
         # Attempt to clone GH repo and place into temp folder
         # then set that as the submission directory
-        submission_dir = Path(mkdtemp("safe_clone"))
+        tmp_dir = Path(mkdtemp("safe_clone"))
+        clone_dir = tmp_dir / "cloned"
+        clone_dir.mkdir(exist_ok=True)
+
         # Actually clone the repo from GH so it is available on the filesystem
-        r = Repo.clone_from(github_clone_url, to_path=submission_dir)
+        r = Repo.clone_from(github_clone_url, to_path=clone_dir)
+        repo_name = infer_repo_name(r)
         r.close()
+
+        # Relocate the cloned repository deeper inside another temporary folder, so that
+        # names match up with those expected.
+        submission_dir = tmp_dir / repo_name
+        shutil.move(clone_dir, submission_dir)
+
     elif submission is not None:
         submission_dir = Path(submission)
     else:
diff --git a/assignment_submission_checker/directory.py b/assignment_submission_checker/directory.py
index a60945f..b107800 100644
--- a/assignment_submission_checker/directory.py
+++ b/assignment_submission_checker/directory.py
@@ -530,12 +530,14 @@ def investigate_subdir(
 
         if not path_to_subdir.is_dir():
             if subdir.is_optional:
-                information.append(f"Optional subfolder {subdir.name} of {self.name} not found.")
+                information.append(
+                    f"Optional subfolder '{subdir.name}' of '{self.name}' not found."
+                )
                 return None, warning, information
             else:
                 return (
                     AssignmentCheckerError(
-                        f"Expected subdirectory {subdir.name} to be present in {self.name}, but it is not."
+                        f"Expected subdirectory '{subdir.name}' to be present in '{self.name}', but it is not."
                     ),
                     warning,
                     information,