$ git clone -n https://src.fedoraproject.org/rpms/arachne-pnr.git /var/lib/mock/f39-build-1494751-34542/root/chroot_tmpdir/scmroot/arachne-pnr
Cloning into '/var/lib/mock/f39-build-1494751-34542/root/chroot_tmpdir/scmroot/arachne-pnr'...
$ git fetch origin b22c7ca66c130a21c51c10ee1de4284757401630:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arachne-pnr
 * [new ref]         b22c7ca66c130a21c51c10ee1de4284757401630 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b22c7ca Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild