$ git clone -n https://src.fedoraproject.org/rpms/rust-kvm-ioctls.git /var/lib/mock/f40-build-2150472-50897/root/chroot_tmpdir/scmroot/rust-kvm-ioctls
Cloning into '/var/lib/mock/f40-build-2150472-50897/root/chroot_tmpdir/scmroot/rust-kvm-ioctls'...
$ git fetch origin 86cb7d56649439b95c5ca3a2c171aa19dd3f62fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-kvm-ioctls
 * [new ref]         86cb7d56649439b95c5ca3a2c171aa19dd3f62fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86cb7d5 Update to version 0.15.0