$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-IP.git /var/lib/mock/f45-build-25304-610/root/chroot_tmpdir/scmroot/perl-Net-IP
Cloning into '/var/lib/mock/f45-build-25304-610/root/chroot_tmpdir/scmroot/perl-Net-IP'...
$ git fetch origin f5b8b5acc413f1f5c57a7b29078a71b0049abc9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-IP
 * [new ref]         f5b8b5acc413f1f5c57a7b29078a71b0049abc9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5b8b5a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild