$ git clone -n https://src.fedoraproject.org/rpms/perl-Iterator-Simple.git /var/lib/mock/f45-build-24309-603/root/chroot_tmpdir/scmroot/perl-Iterator-Simple
Cloning into '/var/lib/mock/f45-build-24309-603/root/chroot_tmpdir/scmroot/perl-Iterator-Simple'...
$ git fetch origin 8e5ad24fc8621d0f57ca5b6f92edc9bfe1799324:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Iterator-Simple
 * [new ref]         8e5ad24fc8621d0f57ca5b6f92edc9bfe1799324 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e5ad24 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild