$ git clone -n https://src.fedoraproject.org/rpms/python-flexmock.git /var/lib/mock/f45-build-30673-647/root/chroot_tmpdir/scmroot/python-flexmock
Cloning into '/var/lib/mock/f45-build-30673-647/root/chroot_tmpdir/scmroot/python-flexmock'...
$ git fetch origin f9434b93dab4e6b1d32a4240c6bc8f4f1793a49c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-flexmock
 * [new ref]         f9434b93dab4e6b1d32a4240c6bc8f4f1793a49c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9434b9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild