$ git clone -n https://src.fedoraproject.org/rpms/wireshark.git /var/lib/mock/f42-build-61121224-6589136/root/chroot_tmpdir/scmroot/wireshark
Cloning into '/var/lib/mock/f42-build-61121224-6589136/root/chroot_tmpdir/scmroot/wireshark'...
$ git fetch origin 71047359112a77835754d83148576ac5046754af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wireshark
 * [new ref]         71047359112a77835754d83148576ac5046754af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7104735 Update of fmf plans and theirs location