Merge branch 'hv/receive-denycurrent-everywhere'

"git push" should stop from updating a branch that is checked out when receive.denyCurrentBranch configuration is set, but it failed to pay attention to checkouts in secondary worktrees. This has been corrected. * hv/receive-denycurrent-everywhere: t2402: test worktree path when called in .git directory receive.denyCurrentBranch: respect all worktrees t5509: use a bare repository for test push target get_main_worktree(): allow it to be called in the Git directory