$ git clone -n https://src.fedoraproject.org/rpms/kiwi-boxed-plugin.git /var/lib/mock/f39-build-1970399-43320/root/chroot_tmpdir/scmroot/kiwi-boxed-plugin
Cloning into '/var/lib/mock/f39-build-1970399-43320/root/chroot_tmpdir/scmroot/kiwi-boxed-plugin'...
fatal: unable to access 'https://src.fedoraproject.org/rpms/kiwi-boxed-plugin.git/': OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to src.fedoraproject.org:443