$ git clone -n https://src.fedoraproject.org/rpms/driverctl.git /var/lib/mock/f42-build-side-1-3587362-46931/root/chroot_tmpdir/scmroot/driverctl
Cloning into '/var/lib/mock/f42-build-side-1-3587362-46931/root/chroot_tmpdir/scmroot/driverctl'...
$ git fetch origin 74ae5a4f202e67e25c8eca42d940122401035a88:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/driverctl
 * [new ref]         74ae5a4f202e67e25c8eca42d940122401035a88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74ae5a4 Fix build for bin-sbin merge