$ git clone -n https://src.fedoraproject.org/rpms/wireshark.git /var/lib/mock/f40-build-1292804-23380/root/chroot_tmpdir/scmroot/wireshark
Cloning into '/var/lib/mock/f40-build-1292804-23380/root/chroot_tmpdir/scmroot/wireshark'...
$ git fetch origin 00a09305155d924ec3199919efaae9c6271930af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wireshark
 * [new ref]         00a09305155d924ec3199919efaae9c6271930af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00a0930 Uploading new sources