worktree: rename get_worktree_from_repository()

get_worktree_from_repository() returns a struct worktree that
describes the worktree that the repository argument would operate
on. Since 0f77914760 (worktree: remove "the_repository" from
is_current_worktree(), 2026-03-26) that worktree is always the
"current" worktree. Change the name to get_current_worktee() to
reflect better what the function does.

Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

worktree.c

@@ -66,7 +66,7 @@ static int is_current_worktree(struct worktree *wt)
 	return is_current;
 }
 
-struct worktree *get_worktree_from_repository(struct repository *repo)
+struct worktree *get_current_worktree(struct repository *repo)
 {
 	struct worktree *wt = xcalloc(1, sizeof(*wt));
 	char *gitdir = absolute_pathdup(repo->gitdir);

worktree.h

@@ -42,7 +42,7 @@ struct worktree **get_worktrees_without_reading_head(void);
  * Construct a struct worktree corresponding to repo->gitdir and
  * repo->worktree.
  */
-struct worktree *get_worktree_from_repository(struct repository *repo);
+struct worktree *get_current_worktree(struct repository *repo);
 
 /*
  * Returns 1 if linked worktrees exist, 0 otherwise.

wt-status.c

@@ -1827,7 +1827,7 @@ void wt_status_get_state(struct repository *r,
 	struct stat st;
 	struct object_id oid;
 	enum replay_action action;
-	struct worktree *wt = get_worktree_from_repository(r);
+	struct worktree *wt = get_current_worktree(r);
 
 	if (!stat(git_path_merge_head(r), &st)) {
 		wt_status_check_rebase(wt, state);