$ git clone -n https://src.fedoraproject.org/rpms/erlang-pkix.git /var/lib/mock/f40-build-2483953-61639/root/chroot_tmpdir/scmroot/erlang-pkix
Cloning into '/var/lib/mock/f40-build-2483953-61639/root/chroot_tmpdir/scmroot/erlang-pkix'...
$ git fetch origin b6774ce2d911958ec757e882eb839fe61edc1f51:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-pkix
 * [new ref]         b6774ce2d911958ec757e882eb839fe61edc1f51 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6774ce Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild