$ git clone -n https://src.fedoraproject.org/rpms/rust-zbus.git /var/lib/mock/f40-build-1466289-23684/root/chroot_tmpdir/scmroot/rust-zbus
Cloning into '/var/lib/mock/f40-build-1466289-23684/root/chroot_tmpdir/scmroot/rust-zbus'...
$ git fetch origin 0c57dcd8a78f3237a41720697707cfaf0e3d2957:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zbus
 * [new ref]         0c57dcd8a78f3237a41720697707cfaf0e3d2957 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c57dcd Update to version 4.3.1; Fixes RHBZ#2295592