$ git clone -n https://src.koozali.org/smeserver/perl-Passwd-Unix /var/lib/mock/dist-sme11-os-build-157-15039/root/chroot_tmpdir/scmroot/perl-Passwd-Unix
Cloning into '/var/lib/mock/dist-sme11-os-build-157-15039/root/chroot_tmpdir/scmroot/perl-Passwd-Unix'...
$ git fetch origin 0.15:KOJI_FETCH_HEAD
fatal: couldn't find remote ref 0.15
$ git reset --hard 0.15
fatal: ambiguous argument '0.15': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'