git bundle verify segfaults

Hello:

I seem to be getting a segfault trying to verify bundles created from linux.git. It's easy to reproduce:

$ cd linux
$ git show-ref master
c50bbf615f2f0028ad1771506ef8807130ccc2ce refs/heads/master
$ git bundle create /tmp/linux.bundle master
Enumerating objects: 6705678, done.
Counting objects: 100% (6705678/6705678), done.
Delta compression using up to 8 threads
Compressing objects: 100% (1037089/1037089), done.
Writing objects: 100% (6705678/6705678), 1.19 GiB | 97.81 MiB/s, done.
Total 6705678 (delta 5657955), reused 6664576 (delta 5622679)
$ cd /tmp
$ git bundle verify linux.bundle
BUG: refs.c:1750: attempting to get main_ref_store outside of repository
Aborted (core dumped)
$ git --version
git version 2.21.0

Best, -K