$ git clone -n https://src.fedoraproject.org/rpms/python-fastavro.git /var/lib/mock/f41-build-side-2-python-2714851-30531/root/chroot_tmpdir/scmroot/python-fastavro
Cloning into '/var/lib/mock/f41-build-side-2-python-2714851-30531/root/chroot_tmpdir/scmroot/python-fastavro'...
$ git fetch origin 41fcf2fb16f680e98c8918a3665322d3cf58d0b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fastavro
 * [new ref]         41fcf2fb16f680e98c8918a3665322d3cf58d0b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41fcf2f Update to 1.9.7 upstream release