$ git clone -n https://src.fedoraproject.org/rpms/perl-Proc-ForkSafe.git /var/lib/mock/f45-build-25927-613/root/chroot_tmpdir/scmroot/perl-Proc-ForkSafe
Cloning into '/var/lib/mock/f45-build-25927-613/root/chroot_tmpdir/scmroot/perl-Proc-ForkSafe'...
$ git fetch origin 264498dce5ee05e24b7537e906ea18760f3076f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Proc-ForkSafe
 * [new ref]         264498dce5ee05e24b7537e906ea18760f3076f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 264498d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild