$ git clone -n https://gitee.com/renping000/syslinux.git /var/lib/mock/dist-an23-build-171665-58935/root/chroot_tmpdir/scmroot/syslinux
Cloning into '/var/lib/mock/dist-an23-build-171665-58935/root/chroot_tmpdir/scmroot/syslinux'...
$ git reset --hard 88c0b8a2d7b5cdb1b8197bc25317056e986436d1
HEAD is now at 88c0b8a use extern in header files when declaring global variables