$ git clone -n https://src.fedoraproject.org/rpms/ca-certificates.git /var/lib/mock/f41-build-side-1-2749804-31006/root/chroot_tmpdir/scmroot/ca-certificates
Cloning into '/var/lib/mock/f41-build-side-1-2749804-31006/root/chroot_tmpdir/scmroot/ca-certificates'...
$ git fetch origin a3407acb8618b44bc484cd794be14e7cf3490497:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ca-certificates
 * [new ref]         a3407acb8618b44bc484cd794be14e7cf3490497 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3407ac Revert the droping of /etc/pki/tls/cert.pem