$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-OptList.git /var/lib/mock/f45-build-22886-594/root/chroot_tmpdir/scmroot/perl-Data-OptList
Cloning into '/var/lib/mock/f45-build-22886-594/root/chroot_tmpdir/scmroot/perl-Data-OptList'...
$ git fetch origin e310a0c19597943e245757ff39c002ff5f91e057:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-OptList
 * [new ref]         e310a0c19597943e245757ff39c002ff5f91e057 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e310a0c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild