I tried to reproduce this on my sid system, and there gpg-sq didn't manage to download the key at all:
capitol@tone3:/tmp$ rm addkey* capitol@tone3:/tmp$ touch addkey2.keyring capitol@tone3:/tmp$ LANG=C gpg --no-default-keyring --keyring /tmp/addkey.keyring --keyserver hkp://keyserver.ubuntu.com --recv-keys F1955ED9D1C2D10D80B31B3B14EE37CD15C53BDD gpg: keybox '/tmp/addkey.keyring' created gpg: WARNING: server 'dirmngr' is older than us (2.2.45 < 2.2.46) gpg: Note: Outdated servers may lack important security fixes. gpg: Note: Use the command "gpgconf --kill all" to restart them. gpg: key 14EE37CD15C53BDD: public key "St�hane MANKOWSKI <steph...@mankowski.fr>" imported gpg: Total number processed: 1 gpg: imported: 1 capitol@tone3:/tmp$ LANG=C gpg-sq --no-default-keyring --keyring /tmp/addkey2.keyring --keyserver hkp://keyserver.ubuntu.com --recv-keys F1955ED9D1C2D10D80B31B3B14EE37CD15C53BDD gpg: key 14EE37CD15C53BDD: "Stéphane MANKOWSKI <steph...@mankowski.fr>" not changed gpg: Total number processed: 0 gpg: unchanged: 1 capitol@tone3:/tmp$ ls -la addkey* .rw-rw-r-- capitol capitol 688 B Sat Jan 11 10:42:12 2025 addkey.keyring .rw------- capitol capitol 32 B Sat Jan 11 10:42:12 2025 addkey.keyring~ .rw-rw-r-- capitol capitol 0 B Sat Jan 11 10:42:01 2025 addkey2.keyring Still looks like a bug to me. //Alex
