$ git clone -n https://src.fedoraproject.org/rpms/evolution-data-server.git /var/lib/mock/f42-build-side-1-3497865-45961/root/chroot_tmpdir/scmroot/evolution-data-server
Cloning into '/var/lib/mock/f42-build-side-1-3497865-45961/root/chroot_tmpdir/scmroot/evolution-data-server'...
$ git fetch origin eae18b655a809efa3661b77ef29a6ad33ba609d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/evolution-data-server
 * [new ref]         eae18b655a809efa3661b77ef29a6ad33ba609d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eae18b6 Update to 3.56.1