It seems that mock currently requires /var/lib/mock to be sgid mock, at
least when run by mortal users. I know that older (perhaps much older)
versions of mock did not require this.
I have previously seen problems where the sgid bit on directories could
propagate into built packages. However, a casual attempt to recreate
this fails. Perhaps there has been a fix in rpm for this. Does anyone
know for sure?
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