$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/libpng.git /var/lib/mock/dist-an7-build-28875-15317/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-an7-build-28875-15317/root/chroot_tmpdir/scmroot/libpng'...
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.