$ git clone -n https://src.fedoraproject.org/rpms/evolution-mapi.git /var/lib/mock/f42-build-side-1-3508105-46013/root/chroot_tmpdir/scmroot/evolution-mapi
Cloning into '/var/lib/mock/f42-build-side-1-3508105-46013/root/chroot_tmpdir/scmroot/evolution-mapi'...
$ git fetch origin 58b72803fa27a6f891b6ac58179958e6af1b6d8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/evolution-mapi
 * [new ref]         58b72803fa27a6f891b6ac58179958e6af1b6d8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58b7280 Rebuilt against new Samba 4.22.0 rc1