$ git clone -n https://src.fedoraproject.org/rpms/perl-Business-Hours.git /var/lib/mock/f45-build-21904-588/root/chroot_tmpdir/scmroot/perl-Business-Hours
Cloning into '/var/lib/mock/f45-build-21904-588/root/chroot_tmpdir/scmroot/perl-Business-Hours'...
$ git fetch origin e4bae737d2cf16ceb86815dd836f3aa9b4e960a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Business-Hours
 * [new ref]         e4bae737d2cf16ceb86815dd836f3aa9b4e960a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4bae73 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild