$ git clone -n https://src.fedoraproject.org/rpms/perl-Math-Random-MT-Auto.git /var/lib/mock/f45-build-24719-605/root/chroot_tmpdir/scmroot/perl-Math-Random-MT-Auto
Cloning into '/var/lib/mock/f45-build-24719-605/root/chroot_tmpdir/scmroot/perl-Math-Random-MT-Auto'...
$ git fetch origin 8544cf4f07b6432c3bd6c6f87706bfd529eb344f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Math-Random-MT-Auto
 * [new ref]         8544cf4f07b6432c3bd6c6f87706bfd529eb344f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8544cf4 Perl 5.44 rebuild