$ git clone -n https://src.fedoraproject.org/rpms/perl-Kwiki-Revisions.git /var/lib/mock/f45-build-24379-603/root/chroot_tmpdir/scmroot/perl-Kwiki-Revisions
Cloning into '/var/lib/mock/f45-build-24379-603/root/chroot_tmpdir/scmroot/perl-Kwiki-Revisions'...
$ git fetch origin 6ee356530807bf60368f91443c2ed44bca2f2e35:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Kwiki-Revisions
 * [new ref]         6ee356530807bf60368f91443c2ed44bca2f2e35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ee3565 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild