$ git clone -n https://src.fedoraproject.org/rpms/dosbox-staging.git /var/lib/mock/f39-build-2458565-61441/root/chroot_tmpdir/scmroot/dosbox-staging
Cloning into '/var/lib/mock/f39-build-2458565-61441/root/chroot_tmpdir/scmroot/dosbox-staging'...
$ git fetch origin d4e05a56aa56291af4a7c892a6c1e02a29ed3982:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dosbox-staging
 * [new ref]         d4e05a56aa56291af4a7c892a6c1e02a29ed3982 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4e05a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild