$ git clone -n https://src.fedoraproject.org/rpms/libdispatch.git /var/lib/mock/f41-build-852764-166469/root/chroot_tmpdir/scmroot/libdispatch
Cloning into '/var/lib/mock/f41-build-852764-166469/root/chroot_tmpdir/scmroot/libdispatch'...
$ git fetch origin f1212649fc0dfa8ac450e2376bb7c769a302eba0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdispatch
 * [new ref]         f1212649fc0dfa8ac450e2376bb7c769a302eba0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f121264 Updated to 6.0-RELEASE