$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/byacc.git /var/lib/mock/dist-an7-build-27295-15153/root/chroot_tmpdir/scmroot/byacc
Cloning into '/var/lib/mock/dist-an7-build-27295-15153/root/chroot_tmpdir/scmroot/byacc'...
$ git reset --hard origin/a7
HEAD is now at ef37309 import byacc-1.9.20130304-3.el7.src.rpm