$ git clone -n https://src.fedoraproject.org/rpms/perl-Params-Validate.git /var/lib/mock/f45-build-25620-612/root/chroot_tmpdir/scmroot/perl-Params-Validate
Cloning into '/var/lib/mock/f45-build-25620-612/root/chroot_tmpdir/scmroot/perl-Params-Validate'...
$ git fetch origin 4c4ac0032b0fac0c05cafb43c827a4018f09ebb1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Params-Validate
 * [new ref]         4c4ac0032b0fac0c05cafb43c827a4018f09ebb1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c4ac00 Perl 5.44 rebuild