$ git clone -n https://src.fedoraproject.org/rpms/R-wavethresh.git /var/lib/mock/f42-build-3338624-41426/root/chroot_tmpdir/scmroot/R-wavethresh
Cloning into '/var/lib/mock/f42-build-3338624-41426/root/chroot_tmpdir/scmroot/R-wavethresh'...
$ git fetch origin 45186c46b0ea82d699373302a0d58b2366b86c83:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-wavethresh
 * [new ref]         45186c46b0ea82d699373302a0d58b2366b86c83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45186c4 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild