l --request POST --header "PRIVATE-TOKEN: &lt;your_access_token&gt;" \
    "https://gitlab.example.com/api/v4/projects/1/export" \
    --data "upload[http_method]=PUT" \
    --data-urlencode "upload[url]=https://example-bucket.s3.eu-west-3.amazonaws.com/backup?X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=AKIAIMBJHN2O62W8IELQ%2F20180312%2Feu-west-3%2Fs3%2Faws4_request&amp;X-Amz-Date=20180312T110328Z&amp;X-Amz-Expires=900&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Signature=8413facb20ff33a49a147a0b4abcff