File in gitlab-data repository not encrypted and showing corrupted

I am getting error:inflate: data stream error while taking backup using gitlab:rake gitlab:create:backup

when I browse to that file ( stored in /var/opt/gitlab/repository/project_NMY/org.nmy.tdc.interception.git/objects/fb/287**).
and cat (view) … it is showing ACTUAL CONTENTS and NOT ENCRYPTED file.

when I try to cat(view) any other files(NOT CORRUPTED) it shows random characters i.e. encrypted.

:question: Is there any way that I encrypt that file … may be using other file??.. Will it resolve :wrench: the issue while taking backup??