$ git clone -n https://src.fedoraproject.org/rpms/ilmbase.git /var/lib/mock/f42-build-881705-183663/root/chroot_tmpdir/scmroot/ilmbase
Cloning into '/var/lib/mock/f42-build-881705-183663/root/chroot_tmpdir/scmroot/ilmbase'...
$ git fetch origin 9b4e103603af1ed0fc17d718a0e00ba9acafc6fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ilmbase
 * [new ref]         9b4e103603af1ed0fc17d718a0e00ba9acafc6fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b4e103 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild