$ git clone -n https://src.fedoraproject.org/rpms/bcc.git /var/lib/mock/f40-build-2649444-66842/root/chroot_tmpdir/scmroot/bcc
Cloning into '/var/lib/mock/f40-build-2649444-66842/root/chroot_tmpdir/scmroot/bcc'...
$ git fetch origin 267b636ed630118030d01adab4733eafcf5c93cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bcc
 * [new ref]         267b636ed630118030d01adab4733eafcf5c93cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 267b636 Don't use -no-pie flag to compile bcc-lua