$ git clone -n https://src.fedoraproject.org/rpms/rubygem-actionpack.git /var/lib/mock/f40-build-2366993-60380/root/chroot_tmpdir/scmroot/rubygem-actionpack
Cloning into '/var/lib/mock/f40-build-2366993-60380/root/chroot_tmpdir/scmroot/rubygem-actionpack'...
$ git fetch origin 02b29b31e81dc82416d48ad88aa1981781c04508:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-actionpack
 * [new ref]         02b29b31e81dc82416d48ad88aa1981781c04508 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 02b29b3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild