$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode_names2_generator.git /var/lib/mock/f45-build-45941-829/root/chroot_tmpdir/scmroot/rust-unicode_names2_generator
Cloning into '/var/lib/mock/f45-build-45941-829/root/chroot_tmpdir/scmroot/rust-unicode_names2_generator'...
$ git fetch origin 6218dfd16379ca75d5eef37dc7cd165fc203c123:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode_names2_generator
 * [new ref]         6218dfd16379ca75d5eef37dc7cd165fc203c123 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6218dfd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild