$ git clone -n https://src.fedoraproject.org/rpms/wxGTK.git /var/lib/mock/f41-build-side-1-2810758-32917/root/chroot_tmpdir/scmroot/wxGTK
Cloning into '/var/lib/mock/f41-build-side-1-2810758-32917/root/chroot_tmpdir/scmroot/wxGTK'...
$ git fetch origin 2cf0b269696b995ee4708682262bce4b2c22ea2f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wxGTK
 * [new ref]         2cf0b269696b995ee4708682262bce4b2c22ea2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cf0b26 Update to new upstream release 3.2.6