$ git clone -n https://src.fedoraproject.org/rpms/assertj-core.git /var/lib/mock/f38-build-side-42-init-devel-736858-27649/root/chroot_tmpdir/scmroot/assertj-core
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-736858-27649/root/chroot_tmpdir/scmroot/assertj-core'...
$ git fetch origin 0d5b95b6e0ccccc2be8690de0d9c0fa13a3e131d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/assertj-core
 * [new ref]         0d5b95b6e0ccccc2be8690de0d9c0fa13a3e131d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d5b95b Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild