$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-RandomResult.git /var/lib/mock/f45-build-26817-619/root/chroot_tmpdir/scmroot/perl-Test-RandomResult
Cloning into '/var/lib/mock/f45-build-26817-619/root/chroot_tmpdir/scmroot/perl-Test-RandomResult'...
$ git fetch origin f63b6c0a87990c4c308ec7e553fcb0b9ae041f49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-RandomResult
 * [new ref]         f63b6c0a87990c4c308ec7e553fcb0b9ae041f49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f63b6c0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild