$ git clone -n https://src.fedoraproject.org/rpms/evolution-ews.git /var/lib/mock/f39-build-1818779-41839/root/chroot_tmpdir/scmroot/evolution-ews
Cloning into '/var/lib/mock/f39-build-1818779-41839/root/chroot_tmpdir/scmroot/evolution-ews'...
$ git fetch origin 304d012266dc5076d297a7e26fbf214cbd1461e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/evolution-ews
 * [new ref]         304d012266dc5076d297a7e26fbf214cbd1461e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 304d012 Update to 3.50.1