ci: fix sync-upstream.sh

Author: miparnisari

.github/workflows/sync-upstream.sh

@@ -49,6 +49,17 @@ PREFER_UPSTREAM="${PREFER_UPSTREAM:-1}"
 # either, so a failure there says nothing about the sync.
 SKIP_MODULES="repl codelab tools"
 
+# This script commits, and a CI runner has no git identity configured, so
+# `git commit` there fails with "Author identity unknown". Supply one through
+# the environment only when the checkout has none, which leaves an ordinary
+# local run using the identity you already have.
+if ! git config --get user.email >/dev/null; then
+  export GIT_AUTHOR_NAME="authzedbot"
+  export GIT_AUTHOR_EMAIL="infrastructure@authzed.com"
+  export GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME"
+  export GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL"
+fi
+
 log()  { printf '\n\033[1m==> %s\033[0m\n' "$*"; }
 warn() { printf '\033[33m%s\033[0m\n' "$*"; }
 die()  { printf '\n\033[31merror: %s\033[0m\n' "$*" >&2; exit 1; }