$ git clone -n https://src.fedoraproject.org/rpms/arch-install-scripts.git /var/lib/mock/f39-build-1535929-36252/root/chroot_tmpdir/scmroot/arch-install-scripts
Cloning into '/var/lib/mock/f39-build-1535929-36252/root/chroot_tmpdir/scmroot/arch-install-scripts'...
$ git fetch origin ab9a12296d80bbfaf4a3ba28954ef0617efc5464:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arch-install-scripts
 * [new ref]         ab9a12296d80bbfaf4a3ba28954ef0617efc5464 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab9a122 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild