$ git clone -n https://src.fedoraproject.org/rpms/hpx.git /var/lib/mock/f38-build-side-42-init-devel-1060452-29765/root/chroot_tmpdir/scmroot/hpx
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1060452-29765/root/chroot_tmpdir/scmroot/hpx'...
$ git fetch origin e275497a19f4a9ea8b9f9de19e4cf168edc62aee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hpx
 * [new ref]         e275497a19f4a9ea8b9f9de19e4cf168edc62aee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e275497 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild