$ git clone -n https://src.fedoraproject.org/rpms/python-beniget.git /var/lib/mock/f45-build-29783-641/root/chroot_tmpdir/scmroot/python-beniget
Cloning into '/var/lib/mock/f45-build-29783-641/root/chroot_tmpdir/scmroot/python-beniget'...
$ git fetch origin d9933605f9c085597d8ede4761672e62d8f10a1d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-beniget
 * [new ref]         d9933605f9c085597d8ede4761672e62d8f10a1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d993360 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild