$ git clone -n https://src.fedoraproject.org/rpms/python-testtools.git /var/lib/mock/f39-build-1426435-31596/root/chroot_tmpdir/scmroot/python-testtools
Cloning into '/var/lib/mock/f39-build-1426435-31596/root/chroot_tmpdir/scmroot/python-testtools'...
$ git fetch origin d9599aa5f623a4b11faebdcee645395e96de72f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-testtools
 * [new ref]         d9599aa5f623a4b11faebdcee645395e96de72f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9599aa Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild