$ git clone -n https://src.fedoraproject.org/rpms/blivet-gui.git /var/lib/mock/f39-build-1489646-34501/root/chroot_tmpdir/scmroot/blivet-gui
Cloning into '/var/lib/mock/f39-build-1489646-34501/root/chroot_tmpdir/scmroot/blivet-gui'...
$ git fetch origin 05756b13965e4371d16df58f89c4f1bc86d695d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/blivet-gui
 * [new ref]         05756b13965e4371d16df58f89c4f1bc86d695d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05756b1 Fix logic when checking for dialog response (#2241761)