Please describe the problem.

git annex checkpresentkey does not refuse to run in bare repos, as many commands do, but seems to report all keys as absent.

What steps will reproduce the problem?

This is a simple example starting from nothing, but in every bare repo I test, regardless if I use batch or not, all keys are reported absent. Observe that the key can be cat'd directly out of the git annex directory in both bare and non-bare, was moved to the bare via git annex sync, yet shows 1 for present in the non-bare and 0 for the bare:

mkdir repro
cd repro
mkdir bare nonbare
cd bare
git init --bare
cd ../nonbare
git clone ../bare .
git annex init
echo hello > greeting
git annex add greeting
git commit -m update
git annex sync --content
git annex sync --content
echo SHA256E-s6--5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03 | git annex checkpresentkey --batch
cat .git/annex/objects/*/*/SHA256E-s6--5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03/SHA256E-s6--5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03
cd ../bare
echo SHA256E-s6--5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03 | git annex checkpresentkey --batch
cat annex/objects/*/*/SHA256E-s6--5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03/SHA256E-s6--5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03

What version of git-annex are you using? On what operating system?

Debian Testing, git annex version 8.20200330-1

Please provide any additional information below.

# If you can, paste a complete transcript of the problem occurring here.
# If the problem is with the git-annex assistant, paste in .git/annex/daemon.log

# End of transcript or log.

Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)

Oh it's great, especially the low level plumbing commands. I use it for all my backups by first backup up each machine into a Bup repo, and then storing the bup packs/indices in git-annex, which I use for sync'ing across machines.

notabug --Joey