$ git clone -n https://src.fedoraproject.org/rpms/rust-i3ipc.git /var/lib/mock/f41-build-side-1-3098650-39333/root/chroot_tmpdir/scmroot/rust-i3ipc
Cloning into '/var/lib/mock/f41-build-side-1-3098650-39333/root/chroot_tmpdir/scmroot/rust-i3ipc'...
$ git fetch origin bd0435ba4ca5895a409d250d8b82ac6c496a431b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-i3ipc
 * [new ref]         bd0435ba4ca5895a409d250d8b82ac6c496a431b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd0435b unused leaf package for more than two release cycles