apt-get source

apt-get source yourpackage

sed -Ei 's/^# deb-src /deb-src /' /etc/apt/sources.list
apt update
apt install -y  dpkg-source-gitarchive
apt-get source yourpackage

apt-get source your-package
Reading package lists... Done
E: You must put some 'deb-src' URIs in your sources.list

apt-get --build source your-package
sh: 1: dpkg-source: not found

Solution: apt install -y  dpkg-source-gitarchive

dpkg-source-gitarchive

See also

• apt-get [ install | upgrade | update | source ], /etc/apt/sources.list