$ ls -R .cache/guix/substitute/
.cache/guix/substitute/:
4refhwxbjmeua2kwg2nmzhv4dg4d3dorpjefq7kiciw2pfhaf26a/
kzwjeblndsbkjzmjailrt4bnhguil7tqjmewzcyw22hgajbhfy3q/

.cache/guix/substitute/4refhwxbjmeua2kwg2nmzhv4dg4d3dorpjefq7kiciw2pfhaf26a:
52riipmf2ha1p9qz5nijmdy99dvll8aj

.cache/guix/substitute/kzwjeblndsbkjzmjailrt4bnhguil7tqjmewzcyw22hgajbhfy3q:
52riipmf2ha1p9qz5nijmdy99dvll8aj
$ cat .cache/guix/substitute/4refhwxbjmeua2kwg2nmzhv4dg4d3dorpjefq7kiciw2pfhaf26a/52riipmf2ha1p9qz5nijmdy99dvll8aj
(narinfo (version 2) (cache-uri "https://ci.guix.gnu.org") (date 1691133993) (ttl 600) (value #f))