Added working version of git hook clone-or-pull

Signed-off-by: Tony Tkacik <tonydamage@gmail.com>

README.adoc

@@ -0,0 +1,7 @@
+
+## clone-or-pull
+
+Clones repository if not present in target path, otherwises fetches changes.
+Afterwards check-outs path.
+
+The directory must be writeable by git user.

bin/clone-or-pull

@@ -2,27 +2,30 @@
 
 # FIXME: Add checks
 # FIXME: Add logging
-REPO=$(realpath "$PWD");
+REPO=$(realpath "$GIT_DIR");
 TARGET_DIR="$1";
 BRANCH="$2";
 
-env
+unset GIT_DIR
+unset GIT_PUSH_OPTION_COUNT
 
 function perform_clone_or_pull {
   target="$1";
   echo "Checking out working copy to remote: $target"
   if [ ! -e "$target/.git" ]; then
-    git clone "$REPO" "$target";
+    git clone "$REPO" "$target"
   fi
-  (
-    cd "$target";
-    echo "Working directory: $target"
-    git fetch
-    git checkout origin/$BRANCH
-  )
-  echo "Working copy checked out";
+
+    cd "$target"
+    echo -n "Working directory: "
+    pwd
+    git fetch &> /dev/null
+    echo "Checking out branch $BRANCH"
+    git checkout "origin/$BRANCH"
+
 }
 
+
 while read old_rew new_rew ref; do
   if [ "$ref" == "refs/heads/$BRANCH" ]; then
     perform_clone_or_pull "$TARGET_DIR";