Next also following several command by the terminal:

Sudo apt install git_2.20.1-2_b -reinstall If you faced the issues dependence problems ( more):.You should download suitable version of the git ( here).There are several materials which I would like to solve problems in Debian Linux 10. On debian Stretch your /etc/apt/sources.list should be (at least): deb stretch main Your sources.list should be (with non-free packages): deb jessie main contrib non-freeĭeb jessie/updates main contrib non-freeĭeb-src jessie/updates main contrib non-freeĭeb jessie-updates main contrib non-freeĭeb-src jessie-updates main contrib non-freeĭeb jessie-backports main contrib non-free The following package git, liberror-perl and 3 can be downloaded from the main repo, because you don't have the main repo on your sources.list you cannot install git and its dependencies. Then upgrade your package and install git: apt-get update & apt-get upgrade & apt-get dist-upgrade You should edit your sources.list, by adding the following line: deb jessie main contrib

Debian install git