$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/bison.git /var/lib/mock/dist-an7-build-36026-17192/root/chroot_tmpdir/scmroot/bison
Cloning into '/var/lib/mock/dist-an7-build-36026-17192/root/chroot_tmpdir/scmroot/bison'...
$ git reset --hard origin/2.7
HEAD is now at dbddc1f Import bison-2.7-4.el7.src.rpm