RPM is no longer installable

[sakurai-youhei]

RPM was installable until python-shukujitsu-2020.11.27.post4-1

[root@994a264554cb /]# curl https://sakurai-youhei.github.io/python-shukujitsu/rpm/python-shukujitsu-2020.11.27.post4-1.noarch.rpm 2> /dev/null | rpm -qpi /dev/stdin | head
Name        : python-shukujitsu
Version     : 2020.11.27.post4
Release     : 1
Architecture: noarch
Install Date: (not installed)
Group       : Development/Libraries
Size        : 71753
License     : MIT
Signature   : RSA/SHA256, Tue Dec  1 10:59:39 2020, Key ID 8a124cd64688abcc
Source RPM  : python-shukujitsu-2020.11.27.post4-1.src.rpm

python-shukujitsu-2020.11.27.post5-1 was no longer installable

[root@994a264554cb /]# curl https://sakurai-youhei.github.io/python-shukujitsu/rpm/python-shukujitsu-2020.11.27.post5-1.noarch.rpm 2> /dev/null | rpm -qpi /dev/stdin | head
error: /dev/stdin: Header V4 RSA/SHA256 Signature, key ID 4688abcc: BAD
error: /dev/stdin: not an rpm package (or package manifest)

[sakurai-youhei]

Needs help...

Many trials & errors including the replacement of gpg key don't help...

[root@53a446200d01 work]# rpm -Kv dist/python-shukujitsu-2023.2.1.post12-1.noarch.rpm
dist/python-shukujitsu-2023.2.1.post12-1.noarch.rpm:
    Header V4 RSA/SHA256 Signature, key ID ae2f6be1: BAD
    Header SHA256 digest: OK
    Header SHA1 digest: OK
    Payload SHA256 digest: OK
    V4 RSA/SHA256 Signature, key ID ae2f6be1: BAD
    MD5 digest: OK