First I congragulate you to do a ReactOS
s source code mirror and ReactOS source code needs to have GitLab mirrors, but... the matter is that your users name 'ReactOS' is owned by ReactOS Foundation.
Your mirror was not authorized by ReactOS project, so it must be considered as a trademark infringement. Unless you change your user`s name.
Did you try to contact to ReactOS project at least?
See more here: https://www.reactos.org/forum/viewtopic.php?f=2&t=17211