gitolite | Hosting git repositories -- Gitolite allows you to setup | DevOps library

I'm new to Git and I am trying to understand the concept. Maybe someone can help me with a few theoretical questions?

So there is a Git on the remote server and a cloned git on my local computer.

After cloning the git to my local computer with a read permission (gitolite with 'R' permission), can I do any damage to the git on the remote server?

If I do a 'git reset --hard' (I know that there is often a strong advise against it), does this only reset the changes on my local computer or also on the remote server?
Is there a difference if I work with R or RW+ authorization?

I'm currently in the process of moving a gitolite (3) installation between two servers. Thankfully, this process is pretty well documented on the main project website. However, my repositories makes pretty active use of git-annex which stores data in various remotes as well as on the server itself.

Now, I'm not an expert on git-annex, but I know it works a bit differently from "regular" git, so is there anything one should keep in mind when moving this kind of installation or does it work just as outlined in the gitolite documentation above?

Starting point:

• Ubuntu 20.04
• Gitolite (/home/git/)
• Webspace /var/www/webspace (usually owned by www-data:www-data)
• Git user (in www-data group and also tried without beeing in group)

I want to update the webspace as git user with post-receive to a www-data directory. I had it archived before I installed Gitolite, but it doesn't seem to work the same way as it did before (or I am missing something). To make it clear: post-receive is executed after pushing (which it's normally not on Gitolite) ... was a hard time too to archive that.

Edit: To make it clear: I want to archive that Git and www-data can access and modify the same files.

What Ive tried:

• chmod 777 -R /var/www/webspace (after this git can access but nginx returns with 403?)
• Adding Git-User to www-data group
• chown www-data:git -R /var/www/webspace
• chown git:www-data -R /var/www/webspace
• chown git:git -R /var/www/webspace
• chown www-data:www-data -R /var/www/webspace (with and without git inside group)(with and without 777)
• Executing post-receive manually (Operation not permitted)
• Executing post-receive manually as root (well ... works of course, but thats not the point)
• ... maybe also some steps more which Im maybe missing rn

What Ive noticed so far:

• On the contrary to Git, Gitolite checks the repo out with -rw------ (If i remember correctly), maybe that is why its not working with gitolite but with Git

The code (not that it would be important, but just to list everything):

• post-receive

I am trying to clone the gitolite-admin.git repo from my own server after "successfully" installing gitolite (multiple ways: apt-package, github source), but it always gives the same error.

There are many similar topics (many of them very old) but I am still lost. I have two servers, one has gitolite setup, and another has redmine setup. User is pushing changes to the repository created on gitolite server. Redmine is a user on this gitolite server and is pulling changes from it and showing them in browser.

More precisely, I have used the following line on redmine server:

I am attempting to use git-multimail with gitolite to email users of updates - it was fairly straightforward to set up following the instructions https://github.com/git-multimail/git-multimail/blob/master/doc/gitolite.rst but I do not want multiple emails to be sent on push, only 1 summary email that appears in the same vein as