$ git clone -n https://src.fedoraproject.org/rpms/xorg-x11-drv-fbdev.git /var/lib/mock/f41-build-side-1-2810816-32921/root/chroot_tmpdir/scmroot/xorg-x11-drv-fbdev
Cloning into '/var/lib/mock/f41-build-side-1-2810816-32921/root/chroot_tmpdir/scmroot/xorg-x11-drv-fbdev'...
$ git fetch origin c0593985dc6bcb16580fab96d91f1d623f189c6f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xorg-x11-drv-fbdev
 * [new ref]         c0593985dc6bcb16580fab96d91f1d623f189c6f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c059398 All legacy fbdev drivers have been removed in favor of simplefb: https://fedoraproject.org/wiki/Changes/ReplaceFbdevDrivers