After setting the config `include.path` key, can't delete the branch which is tracking the remote branch.

What steps will reproduce the problem?

1. Perform git config --local include.path ../.tgitconfig

2. Create a local branch on a remote branch, and make sure the Track is checked.

3. Delete that local branch

What is the expected output?

That local branch is deleted normally.

What do you see instead?

Could not delete reference.
libgit2 returned: could not find key 'branch.master.merge' to delete

What version of TortoiseGit and Git are you using? On what operating system?

TortoiseGit 2.4.1 + GfW 2.12.2.2

Please provide any additional information below.

My break points: break_points.xml