$ git clone -n https://src.fedoraproject.org/rpms/perl-Log-Handler.git /var/lib/mock/f45-build-24499-604/root/chroot_tmpdir/scmroot/perl-Log-Handler
Cloning into '/var/lib/mock/f45-build-24499-604/root/chroot_tmpdir/scmroot/perl-Log-Handler'...
$ git fetch origin b262efaa468b3245b8fe398807eafcfd2d3c6855:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Log-Handler
 * [new ref]         b262efaa468b3245b8fe398807eafcfd2d3c6855 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b262efa Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild