Repository cloning is the act of copying a code repository to another location, usually by using a source control tool such as Git. A clone includes the project files and, often, the full commit history, branches, and metadata. That history can be as important as the code itself because it reveals past changes, deleted files, and sometimes traces of secrets, endpoints, or internal workflows.
In cyber security, cloning matters because it can be a normal developer task or an abuse signal. Defenders clone repositories for backup, review, and forensics, while attackers use valid credentials or tokens to copy private code without breaking the source system. Large or unusual cloning activity can indicate data theft, especially when private repositories are involved. Monitoring clone logs, limiting token scope, and revoking stale credentials help reduce the risk that a single account can be used to extract sensitive source code at scale.