$ git clone -n https://src.fedoraproject.org/rpms/golang-github-viant-toolbox.git /var/lib/mock/f38-build-side-42-init-devel-931622-28746/root/chroot_tmpdir/scmroot/golang-github-viant-toolbox
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-931622-28746/root/chroot_tmpdir/scmroot/golang-github-viant-toolbox'...
$ git fetch origin 3a8500e6a8c842e0a9f2050df70748d976033796:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-viant-toolbox
 * [new ref]         3a8500e6a8c842e0a9f2050df70748d976033796 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a8500e Reference FTBFS bug in changelog