buildx/hack/git-meta

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#!/usr/bin/env sh
set -e
case $1 in
"version")
git describe --match 'v[0-9]*' --dirty='.m' --always --tags
;;
"revision")
echo "$(git rev-parse HEAD)$(if ! git diff --no-ext-diff --quiet --exit-code; then echo .m; fi)"
;;
*)
echo "usage: ./hack/git-meta <version|revision>"
exit 1
;;
esac