Retrieves code from a GitHub repository URL and combines it into a single file. The URL must start with "https://". Query Parameters: - dir: Filter files by directory paths (comma-separated) Example: ?dir=src/components,tests/unit - ext: Filter files by extensions (comma-separated) Example: ?ext=ts,tsx,js - mode: Display mode Example: ?mode=tree (Shows directory structure only) - branch: Specify the branch to fetch from (optional) Example: ?branch=feature/new-feature Examples: 1. For GitHub tree URLs with branch: https://github.com/kazuph/pera1/tree/feature/great-branch This URL will be automatically parsed to extract the branch information. 2. For specific directory in a branch: url: https://github.com/modelcontextprotocol/servers dir: src/fetch branch: develop The tool will correctly parse the repository structure and fetch the files from the specified branch.