$ git clone -n https://src.fedoraproject.org/rpms/rust-trust-dns-resolver.git /var/lib/mock/f40-build-2064151-49167/root/chroot_tmpdir/scmroot/rust-trust-dns-resolver
Cloning into '/var/lib/mock/f40-build-2064151-49167/root/chroot_tmpdir/scmroot/rust-trust-dns-resolver'...
$ git fetch origin d47ae4ef00485ba61e6e8f869c3a47b64e7c0c4e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-trust-dns-resolver
 * [new ref]         d47ae4ef00485ba61e6e8f869c3a47b64e7c0c4e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d47ae4e Update to version 0.23.2; Fixes RHBZ#2245713