$ git clone -n https://src.fedoraproject.org/rpms/perl-TeX-Hyphen.git /var/lib/mock/f45-build-26487-617/root/chroot_tmpdir/scmroot/perl-TeX-Hyphen
Cloning into '/var/lib/mock/f45-build-26487-617/root/chroot_tmpdir/scmroot/perl-TeX-Hyphen'...
$ git fetch origin 704f1f1170e5e8e9b1d8c311564e71ac3a8db191:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-TeX-Hyphen
 * [new ref]         704f1f1170e5e8e9b1d8c311564e71ac3a8db191 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 704f1f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild