$ git clone -n https://src.fedoraproject.org/rpms/klettres.git /var/lib/mock/f38-build-side-42-init-devel-1143771-30457/root/chroot_tmpdir/scmroot/klettres
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1143771-30457/root/chroot_tmpdir/scmroot/klettres'...
$ git fetch origin fea618ac7e42b63ec6f6a99743a0165730c60ad3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/klettres
 * [new ref]         fea618ac7e42b63ec6f6a99743a0165730c60ad3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fea618a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild