$ git clone -n https://src.fedoraproject.org/rpms/pdbg.git /var/lib/mock/f39-build-2557880-62012/root/chroot_tmpdir/scmroot/pdbg
Cloning into '/var/lib/mock/f39-build-2557880-62012/root/chroot_tmpdir/scmroot/pdbg'...
$ git fetch origin 0a3d85a55a9ef9df491414657137ab21049e1ca5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pdbg
 * [new ref]         0a3d85a55a9ef9df491414657137ab21049e1ca5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a3d85a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild