$ git clone -n https://src.fedoraproject.org/rpms/pcg-cpp.git /var/lib/mock/f40-build-2304958-56762/root/chroot_tmpdir/scmroot/pcg-cpp
Cloning into '/var/lib/mock/f40-build-2304958-56762/root/chroot_tmpdir/scmroot/pcg-cpp'...
$ git fetch origin 1636081acdd1be6bf4320d823219554d51a90809:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcg-cpp
 * [new ref]         1636081acdd1be6bf4320d823219554d51a90809 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1636081 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild