$ git clone -n https://src.fedoraproject.org/rpms/rust-zbus.git /var/lib/mock/f40-build-2684418-67983/root/chroot_tmpdir/scmroot/rust-zbus
Cloning into '/var/lib/mock/f40-build-2684418-67983/root/chroot_tmpdir/scmroot/rust-zbus'...
$ git fetch origin 1c806bbd4fa86afd0e29f6ba6d9ec4f416d88730:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zbus
 * [new ref]         1c806bbd4fa86afd0e29f6ba6d9ec4f416d88730 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c806bb Update to version 4.1.2; Fixes RHBZ#2262704