Address PR comments

Author: jiaxinnns

exercise_utils/github_cli.py

@@ -9,7 +9,10 @@
 def fork_repo(
     repository_name: str, fork_name: str, verbose: bool, default_branch_only: bool = True
 ) -> None:
-    """Creates a fork of a repository."""
+    """
+    Creates a fork of a repository.
+    Forks only the default branch, unless specified otherwise.
+    """
     command = ["gh", "repo", "fork", repository_name]
     if default_branch_only:
         command.append("--default-branch-only")

hands_on/remote_branch_push.py

@@ -16,12 +16,10 @@
 def download(verbose: bool):
     username = get_github_username(verbose)
 
-    if has_fork(REPO_NAME, REPO_OWNER, username, verbose):
-        existing_name = get_fork_name(REPO_NAME, REPO_OWNER, username, verbose)
-        clone_repo_with_git(f"https://github.com/{username}/{existing_name}", verbose, FORK_NAME)
-        return
+    if not has_fork(REPO_NAME, REPO_OWNER, username, verbose):
+        fork_repo(
+            f"{REPO_OWNER}/{REPO_NAME}", FORK_NAME, verbose, False
+        )
 
-    fork_repo(
-        f"{REPO_OWNER}/{REPO_NAME}", FORK_NAME, verbose, False
-    )
-    clone_repo_with_git(f"https://github.com/{username}/{FORK_NAME}", verbose, FORK_NAME)
+    existing_name = get_fork_name(REPO_NAME, REPO_OWNER, username, verbose)
+    clone_repo_with_git(f"https://github.com/{username}/{existing_name}", verbose, FORK_NAME)