$ git clone -n https://src.fedoraproject.org/rpms/dtc.git /var/lib/mock/f40-build-2209193-52150/root/chroot_tmpdir/scmroot/dtc
Cloning into '/var/lib/mock/f40-build-2209193-52150/root/chroot_tmpdir/scmroot/dtc'...
$ git fetch origin 9471eabdb0a23206707589cd2116fcd29d2291ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dtc
 * [new ref]         9471eabdb0a23206707589cd2116fcd29d2291ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9471eab Don't install a Python .egg