Check out graft, transpose.
Make sure, that there are no modifications in source repository:
hg -R /home/ws/project/ws_rfid/demo status -q
Get filemap of active files:
hg -R /home/ws/project/ws_rfid/demo status -c | sed 's,^C,include,' >filemap.txt
Convert source repo to new repo without deleted files:
hg convert --filemap filemap.txt /home/ws/project/ws_rfid/demo demo
Update new repo:
( cd demo && hg update -C )
dest_repo="adhoc-c"
rm -rf "${dest_repo}"
cat <<'EOF' >filemap
include "adhoc"
rename "adhoc" "."
EOF
hg convert --filemap filemap /home/ws/project/ws-util "${dest_repo}"
(
cd "${dest_repo}" || exit 1
hg update -C
)
Remove unwanted branches:
hg clone --rev xxx URL
Also copy .hg/hgrc!