t3905-stash-include-untracked.sh: use the $( ... ) construct for command substitution

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index c1b7e2d2c6949b7bd900c7991c58e590cce50494..a651d68656617182ef79e9bad5d539d74346b83c 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v1.8.5.5
+DEF_VER=v1.9.0.GIT
 
 LF='
 '