$ git clone -n https://src.fedoraproject.org/rpms/rust-trust-dns-client.git /var/lib/mock/f39-build-1585517-38146/root/chroot_tmpdir/scmroot/rust-trust-dns-client
Cloning into '/var/lib/mock/f39-build-1585517-38146/root/chroot_tmpdir/scmroot/rust-trust-dns-client'...
$ git fetch origin 975a7c30e315de4f335855efcba54df55542a8af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-trust-dns-client
 * [new ref]         975a7c30e315de4f335855efcba54df55542a8af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 975a7c3 Update to version 0.23.1; Fixes RHBZ#2233602