Fix for initialized git repo without any config

Previous version failed in the repo initialized by git init but before
the first commit was committed to it. The reason was that
git symbolic-ref HEAD returns refs/heads/master, however
git checkout-master failed. The solution is to check if HEAD points to a
real commit with git-rev-parse.

diff --git a/builder.sh b/builder.sh
index 35b070e6a214abf185175002b49dd5a27f39a9b0..edd84a1ccd1b1b4562911568d171b2437babe420 100755 (executable)
--- a/builder.sh
+++ b/builder.sh
@@ -796,7 +796,7 @@ init_builder() {
        export GIT_WORK_TREE=$PACKAGE_DIR
        export GIT_DIR=$PACKAGE_DIR/.git
 
-       if [ -d "$GIT_DIR" ] && [ -z "$CVSTAG" ]; then
+       if [ -d "$GIT_DIR" ] &&  [ -z "$CVSTAG" ] && git rev-parse --verify -q HEAD > /dev/null; then
                if CVSTAG=$(GIT_DIR=$GIT_DIR git symbolic-ref HEAD) 2>/dev/null; then
                        CVSTAG=${CVSTAG#refs/heads/}
                        if [ "$CVSTAG" != "master" ]; then