$ git clone -n https://src.fedoraproject.org/rpms/rubygem-mizuho.git /var/lib/mock/f45-build-35094-693/root/chroot_tmpdir/scmroot/rubygem-mizuho
Cloning into '/var/lib/mock/f45-build-35094-693/root/chroot_tmpdir/scmroot/rubygem-mizuho'...
$ git fetch origin ae3d5333037955a7e792de558a1c868dd455b03d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-mizuho
 * [new ref]         ae3d5333037955a7e792de558a1c868dd455b03d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae3d533 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild