$ git clone -n https://src.fedoraproject.org/rpms/ruby.git /var/lib/mock/f45-build-5910-345/root/chroot_tmpdir/scmroot/ruby
Cloning into '/var/lib/mock/f45-build-5910-345/root/chroot_tmpdir/scmroot/ruby'...
$ git fetch origin d2201e13ea046fdb8c871762fbfc07dc8562f1bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ruby
 * [new ref]         d2201e13ea046fdb8c871762fbfc07dc8562f1bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2201e1 Update to Ruby 4.0.7