Merge branch '346563_fix_self_fork_case' into 'master'

Fix the error when the fork is linked to itself

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/141273



Merged-by: Bala Kumar <sbalakumar@gitlab.com>
Approved-by: Eduardo Bonet <ebonet@gitlab.com>
Approved-by: Bala Kumar <sbalakumar@gitlab.com>
Co-authored-by: Vasilii Iakliushin <viakliushin@gitlab.com>