$ git clone -n https://src.fedoraproject.org/rpms/bitlbee.git /var/lib/mock/f41-build-762806-13458/root/chroot_tmpdir/scmroot/bitlbee
Cloning into '/var/lib/mock/f41-build-762806-13458/root/chroot_tmpdir/scmroot/bitlbee'...
$ git fetch origin 4c331b9f94f99282457aec0d0a2c40f3bb68d0eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bitlbee
 * [new ref]         4c331b9f94f99282457aec0d0a2c40f3bb68d0eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c331b9 Eliminate use of obsolete %patchN syntax (#2283636)