$ git clone -n https://src.fedoraproject.org/rpms/tracker-miners.git /var/lib/mock/f42-build-3347450-45004/root/chroot_tmpdir/scmroot/tracker-miners
Cloning into '/var/lib/mock/f42-build-3347450-45004/root/chroot_tmpdir/scmroot/tracker-miners'...
$ git fetch origin 6825bffd478753bfc5a0b17afce0a5eee69e1000:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tracker-miners
 * [new ref]         6825bffd478753bfc5a0b17afce0a5eee69e1000 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6825bff Skip references to systemd units in flatpak builds