$ git clone -n https://src.fedoraproject.org/rpms/cryptobone.git /var/lib/mock/f41-build-1270829-23104/root/chroot_tmpdir/scmroot/cryptobone
Cloning into '/var/lib/mock/f41-build-1270829-23104/root/chroot_tmpdir/scmroot/cryptobone'...
$ git fetch origin 6fa0686fc8d2cfecdfbcf6012d32f8acdddb64d6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cryptobone
 * [new ref]         6fa0686fc8d2cfecdfbcf6012d32f8acdddb64d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6fa0686 Eliminate use of obsolete %patchN syntax (#2283636)