$ git clone -n https://src.fedoraproject.org/rpms/shellz.git /var/lib/mock/f39-build-1507945-35322/root/chroot_tmpdir/scmroot/shellz
Cloning into '/var/lib/mock/f39-build-1507945-35322/root/chroot_tmpdir/scmroot/shellz'...
$ git fetch origin 599604a8ad6bb6270a6fc704520ee78dfd4d50a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shellz
 * [new ref]         599604a8ad6bb6270a6fc704520ee78dfd4d50a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 599604a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild