$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/libtar.git /var/lib/mock/dist-an7-build-32017-15870/root/chroot_tmpdir/scmroot/libtar
Cloning into '/var/lib/mock/dist-an7-build-32017-15870/root/chroot_tmpdir/scmroot/libtar'...
$ git reset --hard origin/a7
HEAD is now at 1256b71 import libtar-1.2.11-29.el7.src.rpm