$ git clone -n https://src.fedoraproject.org/rpms/rust-nu-utils.git /var/lib/mock/f40-build-2073383-49358/root/chroot_tmpdir/scmroot/rust-nu-utils
Cloning into '/var/lib/mock/f40-build-2073383-49358/root/chroot_tmpdir/scmroot/rust-nu-utils'...
$ git fetch origin e55f4257cd76ac960cc95a196d6d34c54cb14637:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nu-utils
 * [new ref]         e55f4257cd76ac960cc95a196d6d34c54cb14637 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e55f425 Update to 0.86.0