$ git clone -n https://src.fedoraproject.org/rpms/bacula.git /var/lib/mock/f40-build-2197392-51636/root/chroot_tmpdir/scmroot/bacula
Cloning into '/var/lib/mock/f40-build-2197392-51636/root/chroot_tmpdir/scmroot/bacula'...
$ git fetch origin 9f367b506bca6998c614e0963fa914d43ab902e7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bacula
 * [new ref]         9f367b506bca6998c614e0963fa914d43ab902e7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f367b5 Disable Qt components in RHEL builds