GOPROXY joined the Go seat, the public proxy and direct with commas, so go went on only after a 404 or 410: a contracts
package the seat does not hold, and a public proxy a node cannot reach, ended the fetch before direct. It joins them
with | now, so any failure goes on to the next. go words a proxy it cannot reach as "invalid version", which the pin
path read as an unknown revision and labelled "on no pull request head"; a network failure is never that now
(network is unreachable and no route to host are network failures).
Claude-Session: https://claude.ai/code/session_01JG73KEq4zoDfM9WtYpcQgZ