Android：repo分析

repo sync如何执行？

Execute
_Fetch
_FetchProjectList
应该是这个函数无疑了。
会导入一些git命令
from git_command import GIT, git_require
from git_config import GetUrlCookieFile
from git_refs import R_HEADS, HEAD

repo sync更新代码报下面错误

error: Your local changes to the following files would be overwritten by checkout:
hisilicon/bigfish/sdk/source/kernel/linux-3.18.y/drivers/wifi
Please, commit your changes or stash them before you can switch branches.
error: The following untracked working tree files would be overwritten by checkout:
hisilicon/bigfish/sdk/source/kernel/linux-3.18.y/drivers/common
hisilicon/bigfish/sdk/source/kernel/linux-3.18.y/drivers/msp