$ git clone -n https://src.fedoraproject.org/rpms/rust-phf0.8.git /var/lib/mock/f45-build-43831-807/root/chroot_tmpdir/scmroot/rust-phf0.8
Cloning into '/var/lib/mock/f45-build-43831-807/root/chroot_tmpdir/scmroot/rust-phf0.8'...
$ git fetch origin 731d686c91ecc4b095c1d3388b83ce72c9247ee7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-phf0.8
 * [new ref]         731d686c91ecc4b095c1d3388b83ce72c9247ee7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 731d686 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild