$ git clone -n https://src.fedoraproject.org/rpms/proxmark3.git /var/lib/mock/f41-build-859766-168708/root/chroot_tmpdir/scmroot/proxmark3
Cloning into '/var/lib/mock/f41-build-859766-168708/root/chroot_tmpdir/scmroot/proxmark3'...
$ git fetch origin e35f5b266ba6cb07b2bead902380072a3b72c7c4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/proxmark3
 * [new ref]         e35f5b266ba6cb07b2bead902380072a3b72c7c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e35f5b2 Update sources file