What the replacement of creating new file with content via url?

Before with url https://gitlab.com/RxTS/sh-syntax/-/new/fix/out_of_bounds?file_name=.changeset/ninety-parrots-divide.md&file=---%0A%22%40zazuko%2Fmymuseum-pipeline%22%3A%20patch%0A---%0A%0Afeat%3A%20gzipping%20output%0A we can create a file named .changeset/ninety-parrots-divide.md and file contnet via file query, but in latest versions, this feature is lost, what's the replacement??