$ git clone -n https://src.fedoraproject.org/rpms/rubygem-guard.git /var/lib/mock/f38-build-side-42-init-devel-573930-25952/root/chroot_tmpdir/scmroot/rubygem-guard
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-573930-25952/root/chroot_tmpdir/scmroot/rubygem-guard'...
$ git fetch origin e1bfd085794584745138e5afbdbf46b4317e5367:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-guard
 * [new ref]         e1bfd085794584745138e5afbdbf46b4317e5367 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1bfd08 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild