git-debimport: 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/git-debimport - from package: gitpkg

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