$ git clone -n https://src.fedoraproject.org/rpms/evolution-mapi.git /var/lib/mock/f39-build-1568778-37681/root/chroot_tmpdir/scmroot/evolution-mapi
Cloning into '/var/lib/mock/f39-build-1568778-37681/root/chroot_tmpdir/scmroot/evolution-mapi'...
$ git fetch origin 49097c9d3d56410ff5157596618064685e6a6a30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/evolution-mapi
 * [new ref]         49097c9d3d56410ff5157596618064685e6a6a30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49097c9 Update to 3.50.0