$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/libpng.git /var/lib/mock/dist-an7-updates-build-43064-21668/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-an7-updates-build-43064-21668/root/chroot_tmpdir/scmroot/libpng'...
$ git reset --hard origin/a7
HEAD is now at 5d003ee update to libpng-1.5.13-8.el7.src.rpm