$ git clone -n https://src.fedoraproject.org/rpms/R-devtools.git /var/lib/mock/f40-build-2071082-49322/root/chroot_tmpdir/scmroot/R-devtools
Cloning into '/var/lib/mock/f40-build-2071082-49322/root/chroot_tmpdir/scmroot/R-devtools'...
$ git fetch origin ee883666c287eb2f4f2faeb1763cd74daec4b702:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-devtools
 * [new ref]         ee883666c287eb2f4f2faeb1763cd74daec4b702 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee88366 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild