$ git clone -n https://src.fedoraproject.org/rpms/rubygem-sprockets-rails.git /var/lib/mock/f40-build-2438079-60877/root/chroot_tmpdir/scmroot/rubygem-sprockets-rails
Cloning into '/var/lib/mock/f40-build-2438079-60877/root/chroot_tmpdir/scmroot/rubygem-sprockets-rails'...
$ git fetch origin 7fb811e30617a8c14f6e11215a9418d0b8d18fad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-sprockets-rails
 * [new ref]         7fb811e30617a8c14f6e11215a9418d0b8d18fad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7fb811e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild