$ git clone -n https://src.fedoraproject.org/rpms/discount.git /var/lib/mock/f45-build-7558-367/root/chroot_tmpdir/scmroot/discount
Cloning into '/var/lib/mock/f45-build-7558-367/root/chroot_tmpdir/scmroot/discount'...
$ git fetch origin 4279deecfcf0058f68873035ad301accab641cd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/discount
 * [new ref]         4279deecfcf0058f68873035ad301accab641cd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4279dee Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild