feat: delete old assignments and add fetch script

admin.py

@@ -0,0 +1,38 @@
+import subprocess
+import shutil
+import os
+import argparse
+
+
+def find_last_commit_with_path(path):
+    try:
+        commit_hash = subprocess.check_output(
+            ["git", "log", "-n", "1", "--pretty=format:%H", "--", path],
+            stderr=subprocess.DEVNULL
+        ).decode("utf-8").strip()
+        return commit_hash
+    except subprocess.CalledProcessError:
+        return None
+
+def copy_from_commit(commit_hash, path):
+    os.makedirs(path, exist_ok=True)
+    subprocess.run(["git", "checkout", commit_hash, "--", path])
+    shutil.copytree(path, path, dirs_exist_ok=True)
+
+
+def main():
+    parser = argparse.ArgumentParser(description="Copies an old assignment into the worktree.")
+    parser.add_argument("assignment", help="An assignment, e.g. 'assign0', 'assign1', etc.")
+    args = parser.parse_args()
+
+    path = args.assignment
+    commit_hash = find_last_commit_with_path(path)
+
+    if commit_hash:
+        print(f"Last commit for {path}: {commit_hash}")
+        copy_from_commit(commit_hash, path)
+        print(f"Copied {path} from commit {commit_hash}.")
+    else:
+        print(f"No commits found for the specified assignment: {path}.")
+
+main()