verifying module: checksum mismatch but only with proxy about athens HOT 1 OPEN

docker run --rm -p 3000:3000 gomods/athens:v0.12.1
GOMODCACHE=$(mktemp -d) GOPROXY=http://127.0.0.1:3000/ go get github.com/homeport/[email protected]

INFO[9:50AM]: Exporter not specified. Traces won't be exported	
2023/09/27 09:50:30 Starting application at port :3000
ERROR[9:50AM]: github.com/[email protected]: invalid github.com import path "github.com/homeport"	http-method=GET http-path=/github.com/homeport/@v/v1.5.7.info request-id=04a90067-1d2b-4a93-9b74-d12d8e162605 
INFO[9:50AM]: incoming request	http-method=GET http-path=/github.com/homeport/@v/v1.5.7.info http-status=404 request-id=04a90067-1d2b-4a93-9b74-d12d8e162605 
ERROR[9:50AM]: [email protected]: invalid github.com import path "github.com"	http-method=GET http-path=/github.com/@v/v1.5.7.info request-id=0078725a-fec4-480e-9c7d-8b4ae2b7cc37 
INFO[9:50AM]: incoming request	http-method=GET http-path=/github.com/@v/v1.5.7.info http-status=404 request-id=0078725a-fec4-480e-9c7d-8b4ae2b7cc37 
ERROR[9:50AM]: github.com/homeport/[email protected]: verifying module: checksum mismatch
	downloaded: h1:mwOGR4Zzlr48RoavdeBuDiVpH2PIVKMD19xuvirMDEE=
	sum.golang.org: h1:24IrdSAb2fprR67XHMIagGoc1c4VNBV9ibNFKICsSis=

SECURITY ERROR
This download does NOT match the one reported by the checksum server.
The bits may have been replaced on the origin server, or an attacker may
have intercepted the download attempt.

For more information, see 'go help module-auth'.
	http-method=GET http-path=/github.com/homeport/dyff/@v/v1.5.7.info request-id=b003ccef-4a77-41f4-bc59-a36f9ae1ccc9 
INFO[9:50AM]: incoming request	http-method=GET http-path=/github.com/homeport/dyff/@v/v1.5.7.info http-status=404 request-id=b003ccef-4a77-41f4-bc59-a36f9ae1ccc9