$ git clone -n https://src.fedoraproject.org/rpms/perl-CGI-Application-Plugin-MessageStack.git /var/lib/mock/f45-build-22047-589/root/chroot_tmpdir/scmroot/perl-CGI-Application-Plugin-MessageStack
Cloning into '/var/lib/mock/f45-build-22047-589/root/chroot_tmpdir/scmroot/perl-CGI-Application-Plugin-MessageStack'...
$ git fetch origin c642df779dfb49f4bf50faa0c2ceb4f9aaab5589:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CGI-Application-Plugin-MessageStack
 * [new ref]         c642df779dfb49f4bf50faa0c2ceb4f9aaab5589 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c642df7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild