$ git clone -n https://src.fedoraproject.org/rpms/rubygem-rack-cors.git /var/lib/mock/f39-build-1805847-41818/root/chroot_tmpdir/scmroot/rubygem-rack-cors
Cloning into '/var/lib/mock/f39-build-1805847-41818/root/chroot_tmpdir/scmroot/rubygem-rack-cors'...
$ git fetch origin 92d34031c8662165efed1b04204933e334c7003c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-rack-cors
 * [new ref]         92d34031c8662165efed1b04204933e334c7003c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92d3403 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild