unpack-trees: check if we can perform the operation for submodules

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 706946c7cd400c50ba93440b7094166d7ada16b4..1eabbd88ac5bf7bc49c69003277872cd87a61102 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.11.1
+DEF_VER=v2.12.0-rc1
 
 LF='
 '
@@ -12,7 +12,7 @@ if test -f version
 then
        VN=$(cat version) || VN="$DEF_VER"
 elif test -d ${GIT_DIR:-.git} -o -f .git &&
-       VN=$(git describe --match "v[0-9]*" --abbrev=7 HEAD 2>/dev/null) &&
+       VN=$(git describe --match "v[0-9]*" HEAD 2>/dev/null) &&
        case "$VN" in
        *$LF*) (exit 1) ;;
        v[0-9]*)