$ git clone -n https://src.fedoraproject.org/rpms/perl-Hash-Case.git /var/lib/mock/f45-build-24071-601/root/chroot_tmpdir/scmroot/perl-Hash-Case
Cloning into '/var/lib/mock/f45-build-24071-601/root/chroot_tmpdir/scmroot/perl-Hash-Case'...
$ git fetch origin 4cc7bfc04bfdcef45f1cab71de3f05272be38d69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Hash-Case
 * [new ref]         4cc7bfc04bfdcef45f1cab71de3f05272be38d69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4cc7bfc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild