When adding new forks/branches to already running server, the data is copied from trunk can be prefilled with milestones, etc..

[Rytisgit]

in utils/testing-container/install-crawl-versions.sh

calls to cp -a -n $DGL_CHROOT/crawl-master/crawl-git $DGL_CHROOT/crawl-master/foo

is needed to fill in the folders with the correct files, but they also copy data contained in the files from the trunk version, if the server has been running this adds unnecesary data to those new files