To swiftly modify the acceleration source, we can add an acceleration button to the right-click menu for quick GitHub download enhancement. First, locate the acceleration source settings within the GitHub client, typically found in the 'Settings' or 'Options' menu. Adjust the settings by modifying server configurations, tweaking connection parameters, or enabling acceleration technologies. Once configured, integrate an acceleration button into the right-click menu. This allows users to select acceleration upon right-clicking a GitHub download, saving time and bandwidth. These modifications significantly improve download efficiency, offering users a more seamless experience.