$ git clone -n https://src.fedoraproject.org/rpms/gnome-software.git /var/lib/mock/f42-build-side-1-3502116-45977/root/chroot_tmpdir/scmroot/gnome-software
Cloning into '/var/lib/mock/f42-build-side-1-3502116-45977/root/chroot_tmpdir/scmroot/gnome-software'...
$ git fetch origin bf4bfbdc37801cf6e1b7017af90e053fd4320fab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-software
 * [new ref]         bf4bfbdc37801cf6e1b7017af90e053fd4320fab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf4bfbd Update to 48.1