错误1:
object f53ecca5dd2b50cfe8fe148af90d263857c65c5c
type commit
tag tecon_v2.7
tagger yunfat <yunfat.wang@tecon.cn> 1594633621 +0800
tecon signed v2.7 same as v2.5 refine mtk
gpg: Signature made Mon 13 Jul 2020 05:47:01 PM CST using RSA key ID FE5A7F1F
gpg: Can't check signature: public key not found
error: could not verify the tag 'tecon_v2.7'