$ git clone -n https://github.com/xcp-ng-rpms/broadcom-bnxt-en /var/lib/mock/v8.3-incoming-9123-27948/root/chroot_tmpdir/scmroot/broadcom-bnxt-en
Cloning into '/var/lib/mock/v8.3-incoming-9123-27948/root/chroot_tmpdir/scmroot/broadcom-bnxt-en'...
$ git fetch origin 6ae17363c759664cc808c2f980e7c00975effd78:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/broadcom-bnxt-en
 * [new ref]         6ae17363c759664cc808c2f980e7c00975effd78 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ae1736 Merge pull request #2 from xcp-ng-rpms/8.3-rebase-XS-20250512