Fix git get_default_branch remote

aliases/available/git.aliases.bash

@@ -234,6 +234,17 @@ function gdv() {
 }
 
 function get_default_branch() {
-	branch=$(git symbolic-ref refs/remotes/origin/HEAD)
-	echo "${branch#refs/remotes/origin/}"
+	local default_remote branch
+
+	# Try origin first (most common)
+	if git remote | grep -q "^origin$"; then
+		default_remote="origin"
+	else
+		# Fall back to the first available remote
+		default_remote=$(git remote | head -n 1)
+	fi
+
+	if [ -n "$default_remote" ] && branch=$(git symbolic-ref --quiet --short refs/remotes/"${default_remote}"/HEAD); then
+		echo "${branch#"${default_remote}"/}"
+	fi
 }

test/aliases/git.bats

@@ -0,0 +1,82 @@
+# SPDX-FileCopyrightText: 2026 Shine Nelson <bash-it@shinenelson.com>
+# SPDX-License-Identifier: MIT
+
+# shellcheck shell=bats
+
+load "${MAIN_BASH_IT_DIR?}/test/test_helper.bash"
+
+function local_setup_file() {
+	setup_libs ""
+}
+
+function local_setup() {
+	TEST_REPO="${BATS_FILE_TMPDIR}/test-repo-${BATS_TEST_NUMBER}"
+	mkdir -p "${TEST_REPO}"
+	cd "${TEST_REPO}" || false
+	git init . 2>&1 | grep -v "Reinitialized" || true
+
+	source "${BASH_IT?}/aliases/available/git.aliases.bash"
+}
+
+@test "get_default_branch: returns main when origin points to main" {
+	# Set up a local remote-like structure
+	git remote add origin "https://github.com/test/repo.git"
+	git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main
+
+	run get_default_branch
+	assert_success
+	assert_output "main"
+}
+
+@test "get_default_branch: returns trunk when origin points to trunk" {
+	git remote add origin "https://github.com/test/repo.git"
+	git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/trunk
+
+	run get_default_branch
+	assert_success
+	assert_output "trunk"
+}
+
+@test "get_default_branch: falls back to first remote when origin doesn't exist" {
+	git remote add upstream "https://github.com/upstream/repo.git"
+	git symbolic-ref refs/remotes/upstream/HEAD refs/remotes/upstream/main
+
+	run get_default_branch
+	assert_success
+	assert_output "main"
+}
+
+@test "get_default_branch: returns empty when no remotes exist" {
+	run get_default_branch
+	assert_success
+	assert_output ""
+}
+
+@test "get_default_branch: returns empty when remote has no HEAD ref" {
+	git remote add origin "https://github.com/test/repo.git"
+	# Don't set a HEAD ref, so the git symbolic-ref command will fail
+
+	run get_default_branch
+	assert_success
+	assert_output ""
+}
+
+@test "get_default_branch: properly strips remote prefix from branch name" {
+	git remote add origin "https://github.com/test/repo.git"
+	git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/trunk
+
+	run get_default_branch
+	assert_success
+	assert_output "trunk"
+}
+
+@test "get_default_branch: uses origin when both origin and another remote exist" {
+	git remote add upstream "https://github.com/upstream/repo.git"
+	git remote add origin "https://github.com/test/repo.git"
+	git symbolic-ref refs/remotes/upstream/HEAD refs/remotes/upstream/main
+	git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/trunk
+
+	run get_default_branch
+	assert_success
+	assert_output "trunk"
+}

test/run

@@ -16,7 +16,7 @@ fi
 
 # Which tests do we run?
 if [[ $# -eq '0' ]]; then
-	test_dirs=("${test_directory}"/{bash_it,completion,install,lib,plugins,themes})
+	test_dirs=("${test_directory}"/{aliases,bash_it,completion,install,lib,plugins,themes})
 else
 	test_dirs=("$@")
 fi