$ git clone -n https://src.fedoraproject.org/rpms/R-showtext.git /var/lib/mock/f40-build-2270438-54816/root/chroot_tmpdir/scmroot/R-showtext
Cloning into '/var/lib/mock/f40-build-2270438-54816/root/chroot_tmpdir/scmroot/R-showtext'...
$ git fetch origin 1d878f807c9f654de0f635cd06dcaf4e3c09d995:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-showtext
 * [new ref]         1d878f807c9f654de0f635cd06dcaf4e3c09d995 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d878f8 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild