build.bash: get the version from git in worktrees, tooHEADmaster

In a git worktree, .git is a file rather than a directory, so the
version came out as "[unknown]".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/build.bash b/build.bash
index e78188e..4623a4f 100755
--- a/build.bash
+++ b/build.bash
@@ -24,7 +24,7 @@ go version > /dev/null
 GOPATH1=$(go env GOPATH | cut -f1 -d:)
 
 # gocryptfs version according to git or a VERSION file
-if [[ -d .git ]] ; then
+if [[ -e .git ]] ; then
 	GITVERSION=$(git describe --tags --dirty || echo "[no_tags_found]")
 	GITBRANCH=$(git rev-parse --abbrev-ref HEAD)
 	if [[ -n $GITBRANCH && $GITBRANCH != master ]] ; then