$ git clone -n https://src.fedoraproject.org/rpms/R-reprex.git /var/lib/mock/f40-build-2169120-50976/root/chroot_tmpdir/scmroot/R-reprex
Cloning into '/var/lib/mock/f40-build-2169120-50976/root/chroot_tmpdir/scmroot/R-reprex'...
$ git fetch origin 9a1a22a1b4e3027ef03d83b8ca67405d2d4b0022:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-reprex
 * [new ref]         9a1a22a1b4e3027ef03d83b8ca67405d2d4b0022 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a1a22a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild