$ git clone -n https://src.fedoraproject.org/rpms/perl-Email-Find.git /var/lib/mock/f45-build-23289-596/root/chroot_tmpdir/scmroot/perl-Email-Find
Cloning into '/var/lib/mock/f45-build-23289-596/root/chroot_tmpdir/scmroot/perl-Email-Find'...
$ git fetch origin eca95e75151a4e06e8f3b656fb835ecdffe60b12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Email-Find
 * [new ref]         eca95e75151a4e06e8f3b656fb835ecdffe60b12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eca95e7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild