$ git clone -n https://src.fedoraproject.org/rpms/perl-MouseX-SimpleConfig.git /var/lib/mock/f45-build-25221-610/root/chroot_tmpdir/scmroot/perl-MouseX-SimpleConfig
Cloning into '/var/lib/mock/f45-build-25221-610/root/chroot_tmpdir/scmroot/perl-MouseX-SimpleConfig'...
$ git fetch origin f85250b65555b4ed5556022a9b901dafa662c8f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-MouseX-SimpleConfig
 * [new ref]         f85250b65555b4ed5556022a9b901dafa662c8f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f85250b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild