$ git clone -n https://src.fedoraproject.org/rpms/perl-Log-Report-Optional.git /var/lib/mock/f45-build-24558-604/root/chroot_tmpdir/scmroot/perl-Log-Report-Optional
Cloning into '/var/lib/mock/f45-build-24558-604/root/chroot_tmpdir/scmroot/perl-Log-Report-Optional'...
$ git fetch origin d866035ddc6bb954bf4fe30575401e76ffef4bd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Log-Report-Optional
 * [new ref]         d866035ddc6bb954bf4fe30575401e76ffef4bd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d866035 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild