$ git clone -n https://src.fedoraproject.org/rpms/perl-Jcode.git /var/lib/mock/f45-build-24330-603/root/chroot_tmpdir/scmroot/perl-Jcode
Cloning into '/var/lib/mock/f45-build-24330-603/root/chroot_tmpdir/scmroot/perl-Jcode'...
$ git fetch origin 49f308303de702a24ad2225acf8008316de32804:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Jcode
 * [new ref]         49f308303de702a24ad2225acf8008316de32804 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49f3083 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild