$ git clone -n https://src.fedoraproject.org/rpms/R-ps.git /var/lib/mock/f39-build-2160794-50947/root/chroot_tmpdir/scmroot/R-ps
Cloning into '/var/lib/mock/f39-build-2160794-50947/root/chroot_tmpdir/scmroot/R-ps'...
$ git fetch origin c858879fd5a806ce66bfcdd186109252e6b5e501:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-ps
 * [new ref]         c858879fd5a806ce66bfcdd186109252e6b5e501 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c858879 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild