$ git clone -n https://src.fedoraproject.org/rpms/python-outcome.git /var/lib/mock/f45-build-31877-656/root/chroot_tmpdir/scmroot/python-outcome
Cloning into '/var/lib/mock/f45-build-31877-656/root/chroot_tmpdir/scmroot/python-outcome'...
$ git fetch origin b24c499fd53131cbffe9558ab643cdca797d0470:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-outcome
 * [new ref]         b24c499fd53131cbffe9558ab643cdca797d0470 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b24c499 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild