$ git clone -n https://src.fedoraproject.org/rpms/erlang-corba.git /var/lib/mock/f45-build-8250-382/root/chroot_tmpdir/scmroot/erlang-corba
Cloning into '/var/lib/mock/f45-build-8250-382/root/chroot_tmpdir/scmroot/erlang-corba'...
$ git fetch origin c41670ce55ad3fc25f56115d82bc9993195c9027:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-corba
 * [new ref]         c41670ce55ad3fc25f56115d82bc9993195c9027 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c41670c Fix FTBFS by disabling doc-generation