$ git clone -n https://src.fedoraproject.org/rpms/bcc.git /var/lib/mock/f40-build-2210040-52174/root/chroot_tmpdir/scmroot/bcc
Cloning into '/var/lib/mock/f40-build-2210040-52174/root/chroot_tmpdir/scmroot/bcc'...
$ git fetch origin 34a2dfeccc0fa8b3378391e2515f4fee0612fe1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bcc
 * [new ref]         34a2dfeccc0fa8b3378391e2515f4fee0612fe1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34a2dfe enable tmt tests