Thank you for your help.
I'm not sure, I completely understand what you mean. We have a
repository that is on a server - lets say it is on S:\GIT\myrepository.
When we install Gerrit 3.0.2 it asks for the basePath. This is S:\GIT.
This is the basePath in gerrit.config. After the installation of gerrit,
we need to run the indexer via java -jar bin/gerrit.war reindex. If we
do this, then gerrit will find all accounts, changes, groups and
projects of all projects in S:\GIT. It will also find all changes of
S:\GIT\myrepository. So there must be some Gerrit specific review data
stored in S:\GIT\myrepository.
I would like to clear all review data from S:\GIT\myrepository. That
means, if the indexer runs for the next time, it will not find any
Gerrit specific data in S:\GIT\myrepository but I would like to keep the
complete Git history of S:\GIT\myrepository. So I would like to strip
all review specific meta data from S:\GIT\myrepository so that it looks
like as if there had never been a code review for S:\GIT\myrepository.