$ git clone -n https://src.fedoraproject.org/rpms/python-spdx-tools.git /var/lib/mock/f40-build-1465642-23661/root/chroot_tmpdir/scmroot/python-spdx-tools
Cloning into '/var/lib/mock/f40-build-1465642-23661/root/chroot_tmpdir/scmroot/python-spdx-tools'...
$ git fetch origin f04fb8a51a1780a73b78eb9a75042a9f32c9e00c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-spdx-tools
 * [new ref]         f04fb8a51a1780a73b78eb9a75042a9f32c9e00c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f04fb8a Update to 0.8.2