$ git clone -n https://src.fedoraproject.org/rpms/rust-pythonize.git /var/lib/mock/f38-build-side-43-rust-devel-1397150-31052/root/chroot_tmpdir/scmroot/rust-pythonize
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1397150-31052/root/chroot_tmpdir/scmroot/rust-pythonize'...
$ git fetch origin ddd8517fe76c69a034804cc9f58b22249770ad4e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pythonize
 * [new ref]         ddd8517fe76c69a034804cc9f58b22249770ad4e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ddd8517 Update to v0.19.0