$ git clone -n https://src.fedoraproject.org/rpms/rust-trust-dns-proto.git /var/lib/mock/f38-build-side-43-rust-devel-1411941-31436/root/chroot_tmpdir/scmroot/rust-trust-dns-proto
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411941-31436/root/chroot_tmpdir/scmroot/rust-trust-dns-proto'...
$ git fetch origin d9823e5e0aa5783c48e018928094d9851646df5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-trust-dns-proto
 * [new ref]         d9823e5e0aa5783c48e018928094d9851646df5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9823e5 Update to version 0.22.0; Fixes RHBZ#2123797