$ git clone -n https://src.fedoraproject.org/rpms/python-gelidum.git /var/lib/mock/f45-build-30830-647/root/chroot_tmpdir/scmroot/python-gelidum
Cloning into '/var/lib/mock/f45-build-30830-647/root/chroot_tmpdir/scmroot/python-gelidum'...
$ git fetch origin cf5109e6428ca62fb47092aed551f690eab73d4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-gelidum
 * [new ref]         cf5109e6428ca62fb47092aed551f690eab73d4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf5109e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild