$ git clone -n https://src.fedoraproject.org/rpms/chmlib.git /var/lib/mock/f40-build-795646-140214/root/chroot_tmpdir/scmroot/chmlib
Cloning into '/var/lib/mock/f40-build-795646-140214/root/chroot_tmpdir/scmroot/chmlib'...
$ git fetch origin 42f7beea01fd0dae834e2bcfb232014351282b2c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chmlib
 * [new ref]         42f7beea01fd0dae834e2bcfb232014351282b2c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42f7bee Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild