Merge pull request #2895 from dokku/2864-git-rebuild-in-dir

fix: Change to app directory when calling git worktree add

plugins/git/functions

@@ -37,7 +37,9 @@ git_build_app_repo() {
 
   if use_git_worktree; then
     # git worktree - this method uses git worktree which was introduced in git 2.5
+    pushd "$DOKKU_ROOT/$APP" > /dev/null
     git worktree add "$GIT_BUILD_APP_REPO_TMP_WORK_DIR" "$REV" > /dev/null
+    popd > /dev/null
     pushd "$GIT_BUILD_APP_REPO_TMP_WORK_DIR" > /dev/null
   else
     # git clone - this method creates a new git repository and adds the primary