Hard to debug `tmt plans ls` with remote plans about tmt HOT 1 OPEN

$ mkdir -p /tmp/reproducer/remote
$ cd /tmp/reproducer/remote
#  repo contains no plan, just fmf root
$ git init && tmt init && git commit -m just-fmf-root

$ mkdir -p /tmp/reproducer/local
$ cd /tmp/reproducer/local
$ tmt init
$ cat <<EOF > plan.fmf
plan:
    import:
        url: /tmp/reproducer/remote
        name: /foo
EOF
# Expected outcome for this call:
$ tmt p ls

No tree node found for '{'url': '/tmp/reproducer/remote', 'name': '/foo'}' reference
$ cd /tmp/reproducer/remote
$ cat <<EOF > foo.fmf
execute:
  how: tmt
EOF
$ git add foo.fmf && git commit -m added-plan

# Plan addded to the remote, but plan cannot import it...
$ cd /tmp/reproducer/local
$ tmt p ls

No tree node found for '{'url': '/tmp/reproducer/remote', 'name': '/foo'}' reference

# It used cached repo... and at that time /foo was not there.
# There is no way how to see this from debug output
# To see that it works if it does fresh checkout ...
$ rm -rf ~/.cache/fmf/_tmp_reproducer_remote*
$ tmt p ls
/plan