1. public git via ssh

mkdir git

1.1. setup /dev

mkdir dev

cd dev

mknod -m 666 null c 1 3

mknod -m 666 tty c 5 0

mknod -m 666 zero c 1 5

mknod -m 666 random c 1 8

chown root:root git

chown 0755 git

cd git

mkdir bin

cp /bin/bash .

identify libs:

ldd /bin/bash

create libs folder

cd ..

mkdir -p lib/x86_64-linux-gnu/

mkdir lib64

copy libs to folder

cp ... ...

useradd git

mkdir etc

cp /etc/passwd etc

cp /etc/group etc

cat << EOF

Match User git

ChrootDirectory /var/www/git

EOF >> /etc/ssh/sshd_config

systemctl restart sshd