import os

fd = open("git_version.txt")
dataList = fd.readlines()
rootdir = os.getcwd()
for i in range(0, len(dataList), 3):
    gitDir = "{location}".format(location=dataList[i].split(' ')[1].strip())
    if os.path.exists(gitDir):
        os.chdir(gitDir)
        os.system("git reset --hard {commit}".format(
            commit=dataList[i + 1].split(' ')[0])
        )
        os.chdir(rootdir)
fd.close()