没有reset命令
~/tidb/dm/conf $ tiup mirror set --reset
Error: unknown flag: --reset
tiup mirror clone tidb-dm-v2.0.6-linux-amd64 --os=linux --arch=amd64 --dm-mastter=v2.0.6 --dm-worker=v2.0.6 --dmctl=v2.0.6
Error: read manifest from mirror(https://tiup-mirrors.pingcap.com) failed: manifest timestamp.json has expired at: 2021-05-26T11:18:30+08:00