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#!/bin/bash
# Check for new commits in upstream ed25519
#
# Return 0 if the upstream ed25519 main branch HEAD matches the
# commit that our copy was vendored from.
#
# This is used in CI workflow to open an issue if new commits are found
set -eu
# This commit matches our securesystemslib/_vendor/ed25519/ content.
# If upstream changes, we should review the changes, vendor them,
# and update the hash here
pyca_ed25519_expected="08a7962a8059e4546a21b97f4a847f75cd1a1bbb"
pyca_ed25519_git_url="https://github.com/pyca/ed25519.git"
pyca_ed25519_main_head=$(git ls-remote "$pyca_ed25519_git_url" main | cut -f1)
if [ "$pyca_ed25519_main_head" != "$pyca_ed25519_expected" ]; then
echo "Expected [main](https://github.com/pyca/ed25519/commits/main)" \
"to be commit ${pyca_ed25519_expected:0:7}, found" \
"${pyca_ed25519_main_head:0:7} instead" \
"([diff](https://github.com/pyca/ed25519/compare/${pyca_ed25519_expected}...main))."
exit 1
fi
echo "No unexpected commits in https://github.com/pyca/ed25519.git"
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