DEFAULT_ACTIONS_URL has set self. The log records that it is still requesting github, resulting in a timeout.
Some logs:
☁ git clone 'http://git.hjsoft.lo/actions/checkout' # ref=v4
cloning http://git.hjsoft.lo/actions/checkout to /root/.cache/act/c3fe249fe73091a17d6638fe1341e7bd0bcc3466ce52323c0688e83e2463a4ab
Get "https://github.com/actions/checkout/info/refs?service=git-upload-pack": dial tcp 20.205.243.166:443: i/o timeout