$ git clone -n https://src.fedoraproject.org/flatpaks/gnome-photos /var/tmp/koji/tasks/6263/132086263/gnome-photos
Cloning into '/var/tmp/koji/tasks/6263/132086263/gnome-photos'...
$ git fetch origin b284cb5c30ee84756a3591195a9599ec8e6f224d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/flatpaks/gnome-photos
 * [new ref]         b284cb5c30ee84756a3591195a9599ec8e6f224d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b284cb5 F42