Git.Branch always gives [HEAD] for detached HEAD commit.

[ArkaHnat]

When I'm trying to use ThisAssembly.Git.Branch on detached head it always returns me [HEAD]. I didn't change any options. When I run command git name-rev --refs=refs/heads/* --no-undefined --always SHA1 which is a default it gives correct result. If my branch isn't detached ThisAssembly.Git.Branch also gives me correct result