$ git clone -n https://src.fedoraproject.org/rpms/rust-libadwaita-sys0.6.git /var/lib/mock/f42-build-side-1-3585832-46908/root/chroot_tmpdir/scmroot/rust-libadwaita-sys0.6
Cloning into '/var/lib/mock/f42-build-side-1-3585832-46908/root/chroot_tmpdir/scmroot/rust-libadwaita-sys0.6'...
$ git fetch origin 1471ecefe7fc5c43f5a89d9d7376ad98d8b15429:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libadwaita-sys0.6
 * [new ref]         1471ecefe7fc5c43f5a89d9d7376ad98d8b15429 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1471ece compat package no longer needed