New issue by zdykstra on void-packages repository

https://github.com/void-linux/void-packages/issues/19209

Description:
<!-- Don't request update of package. We have a script for that. https://alpha.de.repo.voidlinux.org/void-updates/void-updates.txt . However, a quality pull request may help. -->
### System

* xuname:  Void 5.5.3_1 x86_64-musl GenuineIntel uptodate FFFF
* package:  zfsbootmenu-0.8.1_1.noarch.xbps

### Expected behavior
It should be possible to install zfsbootmenu on a musl system, as the package is built noarch and the dependencies for it can be met. 

### Actual behavior

The xbps package seems to be missing under current/musl/ on the master repositories. I've checked alpha.de.repo.voidlinux.org and mirrors.servercentral.com - both are missing the package but have the .sig file.

### Steps to reproduce the behavior

Attempt to install the package into a musl chroot.

```
bash-5.0# XBPS_ARCH=x86_64-musl xbps-install -S -R http://alpha.de.repo.voidlinux.org/current/musl -r test zfsbootmenu
[*] Updating `http://alpha.de.repo.voidlinux.org/current/musl/x86_64-musl-repodata' ...                                                      
x86_64-musl-repodata: 1915KB [avg rate: 2628KB/s]                                                                                            
                                                                                                                                             
Name                 Action    Version           New version            Download size 
....
zfsbootmenu          install   -                 0.8.1_1                11KB 

Size to download:               12KB
Size required on disk:         452MB
Space available on disk:      2682GB

Do you want to continue? [Y/n] y

[*] Downloading packages
zfsbootmenu-0.8.1_1.noarch.xbps.sig: 512B [avg rate: 14MB/s]
ERROR: [trans] failed to download `zfsbootmenu-0.8.1_1' package from `http://alpha.de.repo.voidlinux.org/current/musl': Not Found
```

I manually dropped the xbps from the glibc current/ directory into current/musl/ on mirrors.servercentral.com and I was able to successfully install the package then. It's since been deleted by the interval sync from upstream. The (easy) interim fix is to just copy `current/zfsbootmenu-0.8.1_1.noarch.xbps` to `current/musl/zfsbootmenu-0.8.1_1.noarch.xbps` .