$ git clone -n https://src.fedoraproject.org/rpms/python-fastavro.git /var/lib/mock/f38-build-side-42-init-devel-628990-26375/root/chroot_tmpdir/scmroot/python-fastavro
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-628990-26375/root/chroot_tmpdir/scmroot/python-fastavro'...
$ git fetch origin 8b94d9f5a6360eabeaeeed66b29bccafd1759379:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fastavro
 * [new ref]         8b94d9f5a6360eabeaeeed66b29bccafd1759379 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b94d9f Update to 1.7.3 (close RHBZ#2176743)