The GATE-0 theory is REJECTED for VYNDR, tested rather than assumed. Both remotes are ALREADY HTTPS -- there is no git@ SSH URL in this repo to be blocked -- and both hosts answer on 443: git.builtbykev.com HTTP 200 in 0.64s, github.com HTTP 200 in 0.17s, Gitea's git endpoint 200, GitHub's 401 (auth required, reachable). No connectivity failure of any kind. COLYRA's HTTPS-remote fix was right for COLYRA; VYNDR was already in the state that fix produces, so applying it would have minted a new token to solve a problem that did not exist -- and the pre-existing credential would have made the new token look like the cure. The real cause is in the error text, which named it exactly and was misread all session: "could not read Username for 'https://github.com'". Every attempt used `git push origin main`, and origin is GitHub (kev3109/betonblk) with no stored credential. The WORKING remote is `gitea` (git.builtbykev.com/builtbykev/vyndr.git), and a valid credential for it sat in ~/.git-credentials the entire time. The habit of typing `origin` is what kept twenty commits local. Nothing was blocked. FIX: git push gitea main. Pushed 6452926..ecf78b9, 21 commits, verified by git ls-remote matching local HEAD exactly. No firewall rule touched, no token created, no code or model change -- infra only. The bundle and patch series stay as belt-and-braces; they are no longer the only copy. docs/GIT-PUSH-DIAGNOSIS.md records it so no future session re-reaches for an infrastructure theory when the error message names a credential and a specific host. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01W1sivYNqY2TS5ftykmHBU9
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git push in this environment — it was never the firewall, and never missing credentials
What actually happened
Every push attempt this session used git push origin main and failed with:
fatal: could not read Username for 'https://github.com'
That error names the cause exactly, and it was misread all session as "no git credentials on this machine." Two things were true instead:
originis GitHub (github.com/kev3109/betonblk.git) and has no stored credential.giteais the working remote (git.builtbykev.com/builtbykev/vyndr.git) and a valid credential for it was on the machine the entire time.
The habit of typing origin is what kept twenty commits local. Nothing was
blocked.
The GATE-0 firewall theory — tested and REJECTED for VYNDR
The theory was that GATE-0 (Hetzner mastermind-core-fw, inbound deny-by-default
except 80/443, SSH/22 restricted to Tailscale + Kev's IP) was blocking an
SSH-based push, as it did for COLYRA.
It does not apply here. Measured:
| check | result |
|---|---|
git remote -v |
both remotes are already HTTPS — no git@…:… URL anywhere |
curl -I https://git.builtbykev.com |
HTTP 200 in 0.64s |
curl -I https://github.com |
HTTP 200 in 0.17s |
| Gitea git endpoint over 443 | HTTP 200 |
| GitHub git endpoint over 443 | HTTP 401 (auth required, reachable) |
There was no SSH remote to be blocked and no connectivity failure of any kind. COLYRA's HTTPS-remote fix was the right fix for COLYRA's problem; VYNDR was already in the state that fix produces.
Applying it here would have meant creating a new Gitea token to solve a problem that did not exist — and the pre-existing credential would have made the new token look like the cure.
The fix
git push gitea main # not origin
Result: 6452926..ecf78b9, 21 commits, verified by git ls-remote matching
local HEAD.
Standing note
giteais VYNDR's push remote.origin(GitHub) is unauthenticated on this machine and will always fail.- Read the error text before reaching for an infrastructure theory.
could not read Username for 'https://github.com'is a credential message naming a specific host — it is not a connectivity message, and it named the wrong remote, not a wrong protocol. - The
~/vyndr-full-history-2026-08-07.bundleand patch series stay as belt-and-braces. They are no longer the only copy.