$ git clone -n https://src.fedoraproject.org/rpms/gnome-kiosk.git /var/lib/mock/f41-build-side-1-2750662-31062/root/chroot_tmpdir/scmroot/gnome-kiosk
Cloning into '/var/lib/mock/f41-build-side-1-2750662-31062/root/chroot_tmpdir/scmroot/gnome-kiosk'...
$ git fetch origin ee3914c3018e634341cdbd25e796dc943d3e9a7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-kiosk
 * [new ref]         ee3914c3018e634341cdbd25e796dc943d3e9a7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee3914c Update to 47.0