$ git clone -n https://src.fedoraproject.org/rpms/olpc-utils.git /var/lib/mock/f39-build-2427170-60579/root/chroot_tmpdir/scmroot/olpc-utils
Cloning into '/var/lib/mock/f39-build-2427170-60579/root/chroot_tmpdir/scmroot/olpc-utils'...
$ git fetch origin 8b6e322c3db3a1c5234e7b0b43449d21ed8c8ab2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/olpc-utils
 * [new ref]         8b6e322c3db3a1c5234e7b0b43449d21ed8c8ab2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b6e322 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild