$ git clone -n https://src.fedoraproject.org/rpms/evolution-ews.git /var/lib/mock/f40-build-2171476-51038/root/chroot_tmpdir/scmroot/evolution-ews
Cloning into '/var/lib/mock/f40-build-2171476-51038/root/chroot_tmpdir/scmroot/evolution-ews'...
$ git fetch origin f3ddf9bbf49207261754ac678ebb28c3c8dcd4a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/evolution-ews
 * [new ref]         f3ddf9bbf49207261754ac678ebb28c3c8dcd4a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3ddf9b Update to 3.50.2