Optimize actions/checkout with blobless partial clones#6219
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Apr 8, 2026
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Add
filter: blob:noneto the threeactions/checkoutsteps that usefetch-depth: 0(build, e2e, static). This creates a blobless clone that fetches all commits and trees but downloads file contents lazily on demand, cutting down checkout time.All git-history-dependent operations (git merge-base for credo diff, dorny/paths-filter, etc.) work identically since commit history is fully preserved.