pristine-tar: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/pristine-tar - from package: pristine-tar

You may install the required package with command apt-get install {package}
Error in other languages:
pristine-tar: bevel nie gevind nie
pristine-tar: comandă negăsită
pristine-tar: comando não encontrado
pristine-tar: commande introuvable
pristine-tar: command not found
pristine-tar: käsku ei ole
pristine-tar: không tìm thấy lệnh
pristine-tar: komanda nerasta
pristine-tar: Kommando nicht gefunden.
pristine-tar: kommandot finns inte
pristine-tar: komut yok
pristine-tar: nie znaleziono polecenia
pristine-tar: níor aimsíodh an t-ordú
pristine-tar: no se encontró la orden
pristine-tar: no s'ha trobat l'ordre
pristine-tar: opdracht niet gevonden
pristine-tar: parancs nem található
pristine-tar: perintah tidak ditemukan
pristine-tar: príkaz nenájdený
pristine-tar: příkaz nenalezen
pristine-tar: команда не найдена
pristine-tar: командата не е открита
pristine-tar: 命令找不到
pristine-tar: コマンドが見つかりません