$ git clone -n https://src.fedoraproject.org/rpms/perl-Email-Date.git /var/lib/mock/f45-build-23282-596/root/chroot_tmpdir/scmroot/perl-Email-Date
Cloning into '/var/lib/mock/f45-build-23282-596/root/chroot_tmpdir/scmroot/perl-Email-Date'...
$ git fetch origin f5c71305252a6bf345daf30267fe700494f78e36:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Email-Date
 * [new ref]         f5c71305252a6bf345daf30267fe700494f78e36 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5c7130 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild