oldstable-backports suite causes debmirror to choke

oldstable-backports suite is set to bullseye-backports, which causes 
debmirror to fail with "neither Codename nor Suite matches 
oldstable-backports" when trying to mirror using the name 
oldstable-backports, considering the oldstable-backports Release as invalid.

I am passing 
"--dist=oldstable,oldstable-updates,stable,stable-updates,stable-backports,testing,testing-updates,testing-backports,sid" 
to debmirror currently to grab oldstable, stable, testing, and sid with 
relevant repos. However, I am unable to get oldstable-updates this way 
due to the suite being set to bullseye-backports.

Origin: Debian Backports
Label: Debian Backports
Suite: stable-backports
Codename: bookworm-backports
Changelogs: [...]
Date: Wed, 05 Mar 2025 14:16:34 UTC
Valid-Until: Wed, 12 Mar 2025 14:16:34 UTC
NotAutomatic: yes
ButAutomaticUpgrades: yes
Acquire-By-Hash: yes
No-Support-for-Architecture-all: Packages
Architectures: all amd64 arm64 armel armhf i386 mips64el mipsel ppc64el 
s390x
Components: main contrib non-free-firmware non-free
Description: Debian bookworm - Backports

vs.

Origin: Debian Backports
Label: Debian Backports
Suite: bullseye-backports
Codename: bullseye-backports
Changelogs: [...]
Date: Wed, 05 Mar 2025 14:16:34 UTC
Valid-Until: Wed, 12 Mar 2025 14:16:34 UTC
NotAutomatic: yes
ButAutomaticUpgrades: yes
Acquire-By-Hash: yes
No-Support-for-Architecture-all: Packages
Architectures: all amd64 arm64 armel armhf i386 mips64el mipsel ppc64el 
s390x
Components: main contrib non-free
Description: Debian 11 - Backports

Vivian