$ git clone -n https://src.fedoraproject.org/rpms/perl-Event-ExecFlow.git /var/lib/mock/f45-build-23417-597/root/chroot_tmpdir/scmroot/perl-Event-ExecFlow
Cloning into '/var/lib/mock/f45-build-23417-597/root/chroot_tmpdir/scmroot/perl-Event-ExecFlow'...
$ git fetch origin 25310ed6eb069703832a08e2b0f7a3b6a9390bd1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Event-ExecFlow
 * [new ref]         25310ed6eb069703832a08e2b0f7a3b6a9390bd1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25310ed Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild