$ git clone -n https://src.fedoraproject.org/rpms/perl-Config-Model-Itself.git /var/lib/mock/f45-build-22496-591/root/chroot_tmpdir/scmroot/perl-Config-Model-Itself
Cloning into '/var/lib/mock/f45-build-22496-591/root/chroot_tmpdir/scmroot/perl-Config-Model-Itself'...
$ git fetch origin ec77c308c12109f1d9010cf363629d6578644b12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Config-Model-Itself
 * [new ref]         ec77c308c12109f1d9010cf363629d6578644b12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec77c30 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild