$ git clone -n https://src.fedoraproject.org/rpms/rust-trust-dns-client.git /var/lib/mock/f40-build-2259530-54370/root/chroot_tmpdir/scmroot/rust-trust-dns-client
Cloning into '/var/lib/mock/f40-build-2259530-54370/root/chroot_tmpdir/scmroot/rust-trust-dns-client'...
$ git fetch origin 62196466e50c92ff7a420f95c1fc11b2c6f2529a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-trust-dns-client
 * [new ref]         62196466e50c92ff7a420f95c1fc11b2c6f2529a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6219646 Update to version 0.23.2; Fixes RHBZ#2245714