$ git clone -n https://src.fedoraproject.org/rpms/perl-Number-Format.git /var/lib/mock/f45-build-25473-611/root/chroot_tmpdir/scmroot/perl-Number-Format
Cloning into '/var/lib/mock/f45-build-25473-611/root/chroot_tmpdir/scmroot/perl-Number-Format'...
$ git fetch origin 4f6a38d8e17ef2d07f6777e4e057327812f35dc2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Number-Format
 * [new ref]         4f6a38d8e17ef2d07f6777e4e057327812f35dc2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f6a38d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild