$ git clone -n https://src.fedoraproject.org/rpms/newsboat.git /var/lib/mock/f45-build-39713-750/root/chroot_tmpdir/scmroot/newsboat
Cloning into '/var/lib/mock/f45-build-39713-750/root/chroot_tmpdir/scmroot/newsboat'...
$ git fetch origin d542e28355392777ada5ee63c9adcd2d2f573078:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/newsboat
 * [new ref]         d542e28355392777ada5ee63c9adcd2d2f573078 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d542e28 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild