$ git clone -n https://src.fedoraproject.org/rpms/perl-autobox-dump.git /var/lib/mock/f45-build-27630-625/root/chroot_tmpdir/scmroot/perl-autobox-dump
Cloning into '/var/lib/mock/f45-build-27630-625/root/chroot_tmpdir/scmroot/perl-autobox-dump'...
$ git fetch origin 46125d5fb4ac0e51add432976461502c707a87fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-autobox-dump
 * [new ref]         46125d5fb4ac0e51add432976461502c707a87fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46125d5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild