diff --git a/lib/errors.ts b/lib/errors.ts
index 65dbcd96..2ef0cea1 100644
--- a/lib/errors.ts
+++ b/lib/errors.ts
@@ -57,7 +57,8 @@ export enum GitError {
   TagAlreadyExists,
   MergeWithLocalChanges,
   RebaseWithLocalChanges,
-  MergeCommitNoMainlineOption
+  MergeCommitNoMainlineOption,
+  UnsafeDirectory
 }
 
 /** A mapping from regexes to the git error they identify. */
@@ -68,7 +69,7 @@ export const GitErrorRegexes: { [regexp: string]: GitError } = {
   'fatal: Authentication failed': GitError.SSHAuthenticationFailed,
   'fatal: Could not read from remote repository.': GitError.SSHPermissionDenied,
   'The requested URL returned error: 403': GitError.HTTPSAuthenticationFailed,
-  'fatal: The remote end hung up unexpectedly': GitError.RemoteDisconnection,
+  'fatal: [Tt]he remote end hung up unexpectedly': GitError.RemoteDisconnection,
   "fatal: unable to access '(.+)': Failed to connect to (.+): Host is down": GitError.HostDown,
   "Cloning into '(.+)'...\nfatal: unable to access '(.+)': Could not resolve host: (.+)":
     GitError.HostDown,
@@ -91,7 +92,7 @@ export const GitErrorRegexes: { [regexp: string]: GitError } = {
   "Your configuration specifies to merge with the ref '(.+)'\nfrom the remote, but no such ref was fetched.":
     GitError.NoExistingRemoteBranch,
   'nothing to commit': GitError.NothingToCommit,
-  "No submodule mapping found in .gitmodules for path '(.+)'": GitError.NoSubmoduleMapping,
+  "[Nn]o submodule mapping found in .gitmodules for path '(.+)'": GitError.NoSubmoduleMapping,
   "fatal: repository '(.+)' does not exist\nfatal: clone of '.+' into submodule path '(.+)' failed":
     GitError.SubmoduleRepositoryDoesNotExist,
   "Fetched in submodule path '(.+)', but it did not contain (.+). Direct fetching of that commit failed.":
@@ -104,7 +105,7 @@ export const GitErrorRegexes: { [regexp: string]: GitError } = {
     GitError.NonFastForwardMergeIntoEmptyHead,
   'error: (.+): (patch does not apply|already exists in working directory)':
     GitError.PatchDoesNotApply,
-  "fatal: A branch named '(.+)' already exists.": GitError.BranchAlreadyExists,
+  "fatal: [Aa] branch named '(.+)' already exists.?": GitError.BranchAlreadyExists,
   "fatal: bad revision '(.*)'": GitError.BadRevision,
   'fatal: [Nn]ot a git repository \\(or any of the parent directories\\): (.*)':
     GitError.NotAGitRepository,
@@ -145,7 +146,8 @@ export const GitErrorRegexes: { [regexp: string]: GitError } = {
     GitError.MergeWithLocalChanges,
   'error: cannot (pull with rebase|rebase): You have unstaged changes\\.\n\\s*error: [Pp]lease commit or stash them\\.':
     GitError.RebaseWithLocalChanges,
-  'error: commit (.+) is a merge but no -m option was given': GitError.MergeCommitNoMainlineOption
+  'error: commit (.+) is a merge but no -m option was given': GitError.MergeCommitNoMainlineOption,
+  "fatal: unsafe repository \\('(.+)' is owned by someone else\\)": GitError.UnsafeDirectory
 }
 
 /**
diff --git a/package-lock.json b/package-lock.json
index e1efa365..288e456b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "dugite",
-  "version": "1.106.0",
+  "version": "1.107.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index df05eac8..215ae130 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dugite",
-  "version": "1.106.0",
+  "version": "1.107.0",
   "description": "Elegant bindings for Git",
   "main": "./build/lib/index.js",
   "typings": "./build/lib/index.d.ts",
diff --git a/test/fast/errors-test.ts b/test/fast/errors-test.ts
index d7f0845e..a1bb920c 100644
--- a/test/fast/errors-test.ts
+++ b/test/fast/errors-test.ts
@@ -31,4 +31,12 @@ describe('detects errors', () => {
 
     expect(result).toHaveGitError(GitError.TagAlreadyExists)
   })
+  it('BranchAlreadyExists', async () => {
+    const path = await initialize('branch-already-exists', 'foo')
+    await GitProcess.exec(['commit', '-m', 'initial', '--allow-empty'], path)
+
+    const result = await GitProcess.exec(['branch', 'foo'], path)
+
+    expect(result).toHaveGitError(GitError.BranchAlreadyExists)
+  })
 })