$ git clone -n https://src.fedoraproject.org/rpms/gnome-software.git /var/lib/mock/f42-build-side-1-3584011-46891/root/chroot_tmpdir/scmroot/gnome-software
Cloning into '/var/lib/mock/f42-build-side-1-3584011-46891/root/chroot_tmpdir/scmroot/gnome-software'...
$ git fetch origin e6b2ae4709fdf3e316ce218e6127b0cc9de75c1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-software
 * [new ref]         e6b2ae4709fdf3e316ce218e6127b0cc9de75c1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6b2ae4 Update to 48.3