git clone http:// fails some times with "Request for d53.. aborted"

even when (v 2.7.0) ran on the box where the server is, so unlikely to be network issue

or from my laptop (v 2.9.3) with ok but wifi with a weakish signal to the access point:

$> ( set -e; for s in {1..100}; do rm -rf fbirn_phaseIII ; git clone http://datasets.datalad.org/nidm/fbirn_phaseIII/.git; done; ) Cloning into 'fbirn_phaseIII'... Checking connectivity... done. Cloning into 'fbirn_phaseIII'... error: Request for d53302dfc7ad13b786923927021039d21a10d5bd aborted error: Unable to find d53302dfc7ad13b786923927021039d21a10d5bd under http://datasets.datalad.org/nidm/fbirn_phaseIII/.git Cannot obtain needed tree d53302dfc7ad13b786923927021039d21a10d5bd while processing commit 22dd4c49417cad6f4082ac2aebef45da8b6e473d. error: fetch failed.

even if I build fresh 2.10.0, discovered that we can trace now CURL calls

$> export PATH=$HOME/proj/misc/git:$PATH $> git version git version 2.10.0 $> ( set -e; for s in {1..100}; do rm -rf fbirn_phaseIII ; GIT_TRACE_CURL=/tmp/git-trace-curl-failed.log git clone http://datasets.datalad.org/nidm/fbirn_phaseIII/.git && mv /tmp/git-trace-curl-failed.log /tmp/git-trace-curl-good.log || exit 1; done; ) Cloning into 'fbirn_phaseIII'... warning: templates not found /home/yoh/share/git-core/templates ... a few more ... Cloning into 'fbirn_phaseIII'... warning: templates not found /home/yoh/share/git-core/templates error: Request for d53302dfc7ad13b786923927021039d21a10d5bd aborted error: Unable to find d53302dfc7ad13b786923927021039d21a10d5bd under http://datasets.datalad.org/nidm/fbirn_phaseIII/.git Cannot obtain needed tree d53302dfc7ad13b786923927021039d21a10d5bd while processing commit 22dd4c49417cad6f4082ac2aebef45da8b6e473d. error: fetch failed. ( set -e; for s in {1..100}; do; rm -rf fbirn_phaseIII; GIT_TRACE_CURL= git ) 18.70s user 8.01s system 34% cpu 1:16.84 total

NB 
- note that it is d53302dfc7ad13b786923927021039d21a10d5bd all the time!
- that one corresponds to a tree
$> git show d53302dfc7ad13b786923927021039d21a10d5bd
tree d53302dfc7ad13b786923927021039d21a10d5bd

1ec/
da9/
- I do not see that object being reported as failed to be found on the server:

$> grep d5/3302dfc7ad13b786923927021039d21a10d5bd /var/log/apache2/datasets.datalad.org-error.log
$> grep d5/3302dfc7ad13b786923927021039d21a10d5bd /var/log/apache2/datasets.datalad.org-access.log
129.170.31.34 - - [09/Sep/2016:14:14:25 -0400] "GET /nidm/fbirn_phaseIII/.git/objects/d5/3302dfc7ad13b786923927021039d21a10d5bd HTTP/1.1" 200 72
...
- and the logs say that only "good" run had it requested:

$> zgrep 3302dfc7ad13b786923927021039d21a10d5bd git-trace-curl-*.log.gz git-trace-curl-good.log.gz:18:09:13.749268 http.c:517 => Send header: GET /nidm/fbirn_phaseIII/.git/objects/d5/3302dfc7ad13b786923927021039d21a10d5bd HTTP/1.1

and here are those two GIT_TRACE_CURL traces from good and bad runs -- may be someone with a better clue could figure it out or any other information I should provide to help pin point why that "request for d5... aborted" ;)

http://www.onerussian.com/tmp/git-trace-curl-good.log.gz http://www.onerussian.com/tmp/git-trace-curl-failed.log.gz

Thanks in advance and please CC me in replies