$ git clone -n https://src.fedoraproject.org/rpms/rust-zbus.git /var/lib/mock/f42-build-side-1-3512357-46069/root/chroot_tmpdir/scmroot/rust-zbus
Cloning into '/var/lib/mock/f42-build-side-1-3512357-46069/root/chroot_tmpdir/scmroot/rust-zbus'...
$ git fetch origin 7141146c3f067aa2e1791e89f607fd35d3610968:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zbus
 * [new ref]         7141146c3f067aa2e1791e89f607fd35d3610968 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7141146 Update to version 5.5.0; Fixes RHBZ#2336968