$ git clone -n https://src.fedoraproject.org/rpms/tracker-miners.git /var/lib/mock/f39-build-1540359-36472/root/chroot_tmpdir/scmroot/tracker-miners
Cloning into '/var/lib/mock/f39-build-1540359-36472/root/chroot_tmpdir/scmroot/tracker-miners'...
$ git fetch origin 003f6a52cf9308c60c66996b3ede9b45d08f61e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tracker-miners
 * [new ref]         003f6a52cf9308c60c66996b3ede9b45d08f61e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 003f6a5 Update to 3.6.2