py-version.sh: Use --always option of git describe.
diff --git a/py/py-version.sh b/py/py-version.sh
index daa2548..93b8d7a 100755
--- a/py/py-version.sh
+++ b/py/py-version.sh
@@ -1,7 +1,7 @@
#!/bin/bash
# Note: git describe doesn't work if no tag is available
-git_tag="$(git describe --dirty 2> /dev/null || git rev-parse --short HEAD)"
+git_tag="$(git describe --dirty --always)"
git_hash="$(git rev-parse --short HEAD 2> /dev/null || echo unknown)"
git_files_are_clean=1
# Check if there are any modified files.