$ git clone -n https://src.fedoraproject.org/rpms/rust-orion.git /var/lib/mock/f45-build-43588-804/root/chroot_tmpdir/scmroot/rust-orion
Cloning into '/var/lib/mock/f45-build-43588-804/root/chroot_tmpdir/scmroot/rust-orion'...
$ git fetch origin e279f0a59962a6b2bc7b5737a86b2277568682fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-orion
 * [new ref]         e279f0a59962a6b2bc7b5737a86b2277568682fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e279f0a Update to version 0.17.15; Fixes RHBZ#2461776