$ git clone -n https://src.fedoraproject.org/rpms/wxGTK.git /var/lib/mock/f41-build-850884-165718/root/chroot_tmpdir/scmroot/wxGTK
Cloning into '/var/lib/mock/f41-build-850884-165718/root/chroot_tmpdir/scmroot/wxGTK'...
$ git fetch origin b7c9678128cf30cdc88712cebdb7ab74cabe9684:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wxGTK
 * [new ref]         b7c9678128cf30cdc88712cebdb7ab74cabe9684 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7c9678 Add more wxGTK3 Obsoletes