$ git clone -n https://src.fedoraproject.org/rpms/python-jaraco-envs.git /var/lib/mock/f45-build-31163-650/root/chroot_tmpdir/scmroot/python-jaraco-envs
Cloning into '/var/lib/mock/f45-build-31163-650/root/chroot_tmpdir/scmroot/python-jaraco-envs'...
$ git fetch origin 184ba99a09d3796ab99c9296ff52dd5a53b5e489:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jaraco-envs
 * [new ref]         184ba99a09d3796ab99c9296ff52dd5a53b5e489 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 184ba99 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild