How to download and setup debian
Open terminal and run command
                                            git clone https://github.com/rtts/debian.git
                                        
                                        git clone is used to create a copy or clone of debian repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with debian https://github.com/rtts/debian/archive/master.zip
Or simply clone debian with SSH
                                            [email protected]:rtts/debian.git                                    
                                    If you have some problems with debian
You may open issue on debian support forum (system) here: https://github.com/rtts/debian/issuesSimilar to debian repositories
Here you may see debian alternatives and analogs
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