$ git clone -n https://src.fedoraproject.org/rpms/rubygem-rack-cors.git /var/lib/mock/f40-build-2323289-58706/root/chroot_tmpdir/scmroot/rubygem-rack-cors
Cloning into '/var/lib/mock/f40-build-2323289-58706/root/chroot_tmpdir/scmroot/rubygem-rack-cors'...
$ git fetch origin e73b230a2cc4b6402dcf947a97fd313528e8c130:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-rack-cors
 * [new ref]         e73b230a2cc4b6402dcf947a97fd313528e8c130 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e73b230 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild