$ git clone -n https://src.fedoraproject.org/rpms/ibus.git /var/lib/mock/f41-build-815156-149422/root/chroot_tmpdir/scmroot/ibus
Cloning into '/var/lib/mock/f41-build-815156-149422/root/chroot_tmpdir/scmroot/ibus'...
$ git fetch origin 15f9f3c991a03e6bfc93c732dbc28094a7a5c712:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ibus
 * [new ref]         15f9f3c991a03e6bfc93c732dbc28094a7a5c712 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15f9f3c Bump to 1.5.31-beta1