Hi Borat,
Might be best to wipe the local repos and start over. (Your configs will be preserved this way)
sudo rm -rf /etc/.pihole
sudo git clone -q --depth 1 https://github.com/pi-hole/pi-hole.git /etc/.pihole
sudo rm -rf /var/www/html/admin
sudo git clone -q --depth 1 https://github.com/pi-hole/adminLTE.git /var/www/html/admin
pihole -r
After the last step, choose the repair option, and you should be back on track