$ git clone -n https://src.fedoraproject.org/rpms/ast.git /var/lib/mock/f40-build-2054596-49105/root/chroot_tmpdir/scmroot/ast
Cloning into '/var/lib/mock/f40-build-2054596-49105/root/chroot_tmpdir/scmroot/ast'...
$ git fetch origin 68fb877d8a519ba934171d4e4beceddec6258d4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ast
 * [new ref]         68fb877d8a519ba934171d4e4beceddec6258d4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68fb877 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild