$ git clone -n https://src.fedoraproject.org/rpms/R-XML.git /var/lib/mock/f39-build-1582038-38102/root/chroot_tmpdir/scmroot/R-XML
Cloning into '/var/lib/mock/f39-build-1582038-38102/root/chroot_tmpdir/scmroot/R-XML'...
$ git fetch origin 2377247efc63c629503710fc2d0116a9d824730c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-XML
 * [new ref]         2377247efc63c629503710fc2d0116a9d824730c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2377247 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild