$ git clone -n https://src.fedoraproject.org/rpms/pipewire.git /var/lib/mock/f42-build-side-1-3578384-46814/root/chroot_tmpdir/scmroot/pipewire
Cloning into '/var/lib/mock/f42-build-side-1-3578384-46814/root/chroot_tmpdir/scmroot/pipewire'...
$ git fetch origin 43e8b0fe43ecc47f891959bb031c1bbed686817c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pipewire
 * [new ref]         43e8b0fe43ecc47f891959bb031c1bbed686817c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43e8b0f Update version to 1.4.6