The Clone tool in GIMP uses the current brush to copy from an image or pattern.
Steps to use clone tool are:
• You can access the tool from the image menu through Tools > Paint Tools > Clone. or by clicking on the tool icon 
in Toolbox or by pressing the c keyboard shortcut.
• Set the brush style and size from the Tools Option pane.
• To define the source point press CTRL key and click on the image.
• Release the CTRL key and drag the mouse pointer to the location where we need to draw the clone.
