$ git clone -n https://src.fedoraproject.org/rpms/erlang-p1_pgsql.git /var/lib/mock/f40-build-1882922-25042/root/chroot_tmpdir/scmroot/erlang-p1_pgsql
Cloning into '/var/lib/mock/f40-build-1882922-25042/root/chroot_tmpdir/scmroot/erlang-p1_pgsql'...
$ git fetch origin 47f44916d3fd308f3550c59a5c079b1e7d9e7a82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-p1_pgsql
 * [new ref]         47f44916d3fd308f3550c59a5c079b1e7d9e7a82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47f4491 p1_pgsql ver. 1.1.27