$ git clone -n https://src.fedoraproject.org/rpms/dtkgui.git /var/lib/mock/f39-build-1559222-37320/root/chroot_tmpdir/scmroot/dtkgui
Cloning into '/var/lib/mock/f39-build-1559222-37320/root/chroot_tmpdir/scmroot/dtkgui'...
$ git fetch origin 0fe32b0ddee82e2b13494d75d8f97f38942ed5a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dtkgui
 * [new ref]         0fe32b0ddee82e2b13494d75d8f97f38942ed5a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fe32b0 New release 5.6.12