$ git clone -n http://git.inferitos.ru/rpms/postgres-decoderbufs.git /var/lib/mock/inferit-9_3-bootstrap-build-22087-37087/root/chroot_tmpdir/scmroot/postgres-decoderbufs
Cloning into '/var/lib/mock/inferit-9_3-bootstrap-build-22087-37087/root/chroot_tmpdir/scmroot/postgres-decoderbufs'...
$ git fetch origin changed/i9c-beta/postgres-decoderbufs-1.4.0-4.Final.el9:KOJI_FETCH_HEAD
fatal: couldn't find remote ref changed/i9c-beta/postgres-decoderbufs-1.4.0-4.Final.el9
$ git reset --hard changed/i9c-beta/postgres-decoderbufs-1.4.0-4.Final.el9
fatal: ambiguous argument 'changed/i9c-beta/postgres-decoderbufs-1.4.0-4.Final.el9': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'