$ git clone -n https://src.fedoraproject.org/rpms/perl-Module-Package.git /var/lib/mock/f45-build-24910-607/root/chroot_tmpdir/scmroot/perl-Module-Package
Cloning into '/var/lib/mock/f45-build-24910-607/root/chroot_tmpdir/scmroot/perl-Module-Package'...
$ git fetch origin ffb3b7e4e5e2d22694194f2b6c93bca28b438589:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Module-Package
 * [new ref]         ffb3b7e4e5e2d22694194f2b6c93bca28b438589 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffb3b7e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild