$ git clone -n https://src.fedoraproject.org/rpms/telepathy-farstream.git /var/lib/mock/f41-build-side-1-2670546-29059/root/chroot_tmpdir/scmroot/telepathy-farstream
Cloning into '/var/lib/mock/f41-build-side-1-2670546-29059/root/chroot_tmpdir/scmroot/telepathy-farstream'...
$ git fetch origin b0b014414aeb65dd49e1b83a6cd4c7eeb857fc90:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/telepathy-farstream
 * [new ref]         b0b014414aeb65dd49e1b83a6cd4c7eeb857fc90 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0b0144 convert license to SPDX