$ git clone -n https://src.fedoraproject.org/rpms/python-flake8.git /var/lib/mock/f45-build-30685-647/root/chroot_tmpdir/scmroot/python-flake8
Cloning into '/var/lib/mock/f45-build-30685-647/root/chroot_tmpdir/scmroot/python-flake8'...
$ git fetch origin 2b7ebaa196f0b111e7afba86341217a2bfb6bc44:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-flake8
 * [new ref]         2b7ebaa196f0b111e7afba86341217a2bfb6bc44 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b7ebaa Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild