$ git clone -n https://src.fedoraproject.org/rpms/alsa-tools.git /var/lib/mock/f40-build-2239797-53623/root/chroot_tmpdir/scmroot/alsa-tools
Cloning into '/var/lib/mock/f40-build-2239797-53623/root/chroot_tmpdir/scmroot/alsa-tools'...
$ git fetch origin 4e028d85fc4bfa6fccd43f269e2497235b29c775:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alsa-tools
 * [new ref]         4e028d85fc4bfa6fccd43f269e2497235b29c775 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e028d8 Fix C type errors using G_CALLBACK