$ git clone -n https://src.fedoraproject.org/rpms/openvdb.git /var/lib/mock/f39-build-1495662-34544/root/chroot_tmpdir/scmroot/openvdb
Cloning into '/var/lib/mock/f39-build-1495662-34544/root/chroot_tmpdir/scmroot/openvdb'...
$ git fetch origin 8ba43759b49f013717b8a2b5043adca963f7c242:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openvdb
 * [new ref]         8ba43759b49f013717b8a2b5043adca963f7c242 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ba4375 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild