$ git clone -n https://src.fedoraproject.org/rpms/rust-hickory-proto.git /var/lib/mock/f45-build-42333-792/root/chroot_tmpdir/scmroot/rust-hickory-proto
Cloning into '/var/lib/mock/f45-build-42333-792/root/chroot_tmpdir/scmroot/rust-hickory-proto'...
$ git fetch origin 6aea07c79deec6e51532c1da6e5340a440ab83a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hickory-proto
 * [new ref]         6aea07c79deec6e51532c1da6e5340a440ab83a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6aea07c Update to version 0.26.3; Fixes RHBZ#2531537