$ git clone -n https://src.fedoraproject.org/rpms/tracker-miners.git /var/lib/mock/f40-build-780179-130701/root/chroot_tmpdir/scmroot/tracker-miners
Cloning into '/var/lib/mock/f40-build-780179-130701/root/chroot_tmpdir/scmroot/tracker-miners'...
$ git fetch origin 9b74dc361fa4662ccf08a117d4ce97e93e5c4178:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tracker-miners
 * [new ref]         9b74dc361fa4662ccf08a117d4ce97e93e5c4178 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b74dc3 Update to 3.7.beta