$ git clone -n https://src.fedoraproject.org/rpms/ktechlab.git /var/lib/mock/f40-build-746339-112585/root/chroot_tmpdir/scmroot/ktechlab
Cloning into '/var/lib/mock/f40-build-746339-112585/root/chroot_tmpdir/scmroot/ktechlab'...
$ git fetch origin 0a18fe721e095a398f60c500468da0bcd4022a82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ktechlab
 * [new ref]         0a18fe721e095a398f60c500468da0bcd4022a82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a18fe7 Fix Bug 2229778 - ktechlab-0.51.0 is available