$ git clone -n https://src.fedoraproject.org/rpms/evolution-ews.git /var/lib/mock/f39-build-2314433-57765/root/chroot_tmpdir/scmroot/evolution-ews
Cloning into '/var/lib/mock/f39-build-2314433-57765/root/chroot_tmpdir/scmroot/evolution-ews'...
$ git fetch origin abcfa88a8124b6e5b706109390a2e2496e4f926a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/evolution-ews
 * [new ref]         abcfa88a8124b6e5b706109390a2e2496e4f926a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abcfa88 Update to 3.50.3