Please describe the problem.

Originally reported (so more details could be found there) in [datalad issue #2988].

While trying to annex get on local cluster, over ssh without a ssh-agent, I was prompted for password multiple times, although previous version didn't do it:

[yhalchen@discovery7 QA]$ git annex version | head -n1 ; git annex get -J2 sub-qa/
git-annex version: 6.20180926-gc906aaf
get sub-qa/ses-20161128/dwi/sub-qa_ses-20161128_acq-DTIX30Xp2Xs4_dwi.nii.gz get sub-qa/ses-20161128/dwi/sub-qa_ses-20161128_acq-DTIX30Xp2_dwi.nii.gz (from origin...) 
(from origin...) 
yoh@falkor.datalad.org's password: yoh@falkor.datalad.org's password: 

and when I try an "imputated" from NeuroDebian .deb package recent build of git-annex then I am observing

[yhalchen@discovery7 QA]$ export PATH=/ihome/yhalchen/7.20181105+git22-g4c7236c58/usr/lib/git-annex.linux:$PATH
[yhalchen@discovery7 QA]$ git annex version | head -n1 ; git annex get -J2 sub-qa/
git-annex version: 7.20181105+git22-g4c7236c58-1~ndall+1
get sub-qa/ses-20161128/dwi/sub-qa_ses-20161128_acq-DTIX30Xp2Xs4_dwi.nii.gz get sub-qa/ses-20161128/dwi/sub-qa_ses-20161128_acq-DTIX30Xp2_dwi.nii.gz (transfer already in progress, or unable to take transfer lock) 
  Unable to access these remotes: origin

  Try making some of these repositories available:
    6384a551-a41d-4290-b186-9258befede97 -- bids@rolando:/inbox/BIDS/dbic/QA
    7d9ed214-3e5f-4cc8-ac88-f397145b2d4c -- yoh@falkor:/srv/datasets.datalad.org/www/dbic/QA [origin]
    ba8f2cea-f229-422c-82be-6580e5e07ed5 -- yoh@smaug:/mnt/datasets/datalad/crawl/dbic/QA
failed
get sub-qa/ses-20161128/func/sub-qa_ses-20161128_task-rest_acq-p2Xs4X35mm_bold.nii.gz (from origin...) 
(from origin...) 


  thread blocked indefinitely in an MVar operation
  thread blocked indefinitely in an STM transaction

  Unable to access these remotes: origin

  Unable to access these remotes: origin

  Try making some of these repositories available:
    6384a551-a41d-4290-b186-9258befede97 -- bids@rolando:/inbox/BIDS/dbic/QA
    7d9ed214-3e5f-4cc8-ac88-f397145b2d4c -- yoh@falkor:/srv/datasets.datalad.org/www/dbic/QA [origin]
    ba8f2cea-f229-422c-82be-6580e5e07ed5 -- yoh@smaug:/mnt/datasets/datalad/crawl/dbic/QA
failed

  Try making some of these repositories available:
    6384a551-a41d-4290-b186-9258befede97 -- bids@rolando:/inbox/BIDS/dbic/QA
    7d9ed214-3e5f-4cc8-ac88-f397145b2d4c -- yoh@falkor:/srv/datasets.datalad.org/www/dbic/QA [origin]
    ba8f2cea-f229-422c-82be-6580e5e07ed5 -- yoh@smaug:/mnt/datasets/datalad/crawl/dbic/QA
failed
git-annex: thread blocked indefinitely in an STM transaction

so smells like may be recent fixes caused some other locking problems

This is on an NFS mounted partition, but remains the same when run under /tmp

Running a significantly more outdated version I found laying around (6.20170815+gitg22da64d0f-1~ndall+1) shows a single password prompt