$ git clone -n https://src.fedoraproject.org/rpms/perl-IPC-Run3.git /var/lib/mock/f45-build-24210-602/root/chroot_tmpdir/scmroot/perl-IPC-Run3
Cloning into '/var/lib/mock/f45-build-24210-602/root/chroot_tmpdir/scmroot/perl-IPC-Run3'...
$ git fetch origin d5a15ffebae31da0f8d642c5345b41cdee2f38ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-IPC-Run3
 * [new ref]         d5a15ffebae31da0f8d642c5345b41cdee2f38ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d5a15ff Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild