$ git clone -n https://src.fedoraproject.org/rpms/perl-Razor-Agent.git /var/lib/mock/f45-build-25992-614/root/chroot_tmpdir/scmroot/perl-Razor-Agent
Cloning into '/var/lib/mock/f45-build-25992-614/root/chroot_tmpdir/scmroot/perl-Razor-Agent'...
$ git fetch origin 87ff326c511dc83e66e6d36f417a906fd0381b8e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Razor-Agent
 * [new ref]         87ff326c511dc83e66e6d36f417a906fd0381b8e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87ff326 Perl 5.44 rebuild