$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/firstboot.git /var/lib/mock/dist-an7-build-27661-15189/root/chroot_tmpdir/scmroot/firstboot
Cloning into '/var/lib/mock/dist-an7-build-27661-15189/root/chroot_tmpdir/scmroot/firstboot'...
$ git reset --hard origin/a7
HEAD is now at 5e094f3 import firstboot-19.12-1.el7.src.rpm