git-restore-mtime: command not found

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 CentOS possible default full paths are:

/usr/bin/git-restore-mtime - from package: git-tools

You may install the required package with command yum install {package}

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