$ git clone -n https://src.fedoraproject.org/rpms/cvs.git /var/lib/mock/f40-build-2276246-55139/root/chroot_tmpdir/scmroot/cvs
Cloning into '/var/lib/mock/f40-build-2276246-55139/root/chroot_tmpdir/scmroot/cvs'...
$ git fetch origin 8c8514d5eff01833d82287e9164c08bcc400fde7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cvs
 * [new ref]         8c8514d5eff01833d82287e9164c08bcc400fde7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c8514d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild