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ci: mirror canonical tag objects, not the lightweight refs checkout builds #67

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jared merged 1 commits from ci/mirror-canonical-tags into main 2026-08-11 10:03:44 -04:00
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jared 9617b86a26 ci: mirror canonical tag objects, not the lightweight refs checkout builds
R-CMD-check / check (push) Successful in 3m45s
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R-CMD-check / check (pull_request) Successful in 3m29s
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v0.4.0 failed to mirror, and it would have failed at every future release.

On a tag-triggered run, checkout materializes refs/tags/<tag> as a LIGHTWEIGHT
tag at the commit SHA; the annotated tag object Gitea holds is never fetched.
Run 2070 therefore pushed a lightweight v0.4.0 to GitHub and reported success.
Run 2076, on main with fetch-depth 0, did fetch the real annotated object and
was rejected with "already exists" trying to correct it -- git will not clobber
an existing tag. Gitea had e138eeb (annotated), GitHub had d2caa6d (the commit).

Re-fetch canonical tag objects from Gitea before pushing. --force rewrites LOCAL
tag refs only; it is not a force push and does not weaken the non-force
guarantee on main. It is required: without it the fetch is rejected with "would
clobber existing tag" and the lightweight ref survives to be mirrored again.

Verified against a scratch clone -- lightweight d2caa6d becomes annotated
e138eeb, peeling back to the same commit; without --force the tag is unchanged.

The GitHub tag was repaired by hand out of band, so the two remotes already
agree; this stops it recurring.
 2026-08-11 09:57:14 -04:00