$ git clone -n https://src.fedoraproject.org/rpms/libvirt-java.git /var/lib/mock/f39-build-1520652-35831/root/chroot_tmpdir/scmroot/libvirt-java
Cloning into '/var/lib/mock/f39-build-1520652-35831/root/chroot_tmpdir/scmroot/libvirt-java'...
$ git fetch origin b6c7da8d2c1259a6f62e0d42559aff756fc68d2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libvirt-java
 * [new ref]         b6c7da8d2c1259a6f62e0d42559aff756fc68d2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6c7da8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild