$ git clone -n https://src.fedoraproject.org/rpms/gnome-autoar.git /var/lib/mock/f41-build-852852-166499/root/chroot_tmpdir/scmroot/gnome-autoar
Cloning into '/var/lib/mock/f41-build-852852-166499/root/chroot_tmpdir/scmroot/gnome-autoar'...
$ git fetch origin 647fb7b0737971e7866214832acb1b10cbeabd81:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-autoar
 * [new ref]         647fb7b0737971e7866214832acb1b10cbeabd81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 647fb7b Update to 0.4.5