$ git clone -n https://src.fedoraproject.org/rpms/python-repoze-who.git /var/lib/mock/f45-build-32651-661/root/chroot_tmpdir/scmroot/python-repoze-who
Cloning into '/var/lib/mock/f45-build-32651-661/root/chroot_tmpdir/scmroot/python-repoze-who'...
$ git fetch origin 0843585074d3cefba6c8c4c2eac52d06a7995da4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-repoze-who
 * [new ref]         0843585074d3cefba6c8c4c2eac52d06a7995da4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0843585 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild