$ git clone -n https://src.fedoraproject.org/rpms/perl-Linux-Pid.git /var/lib/mock/f45-build-24563-604/root/chroot_tmpdir/scmroot/perl-Linux-Pid
Cloning into '/var/lib/mock/f45-build-24563-604/root/chroot_tmpdir/scmroot/perl-Linux-Pid'...
$ git fetch origin 8335a7fffd805ba716c822fd40817b34fa0c1d9f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Linux-Pid
 * [new ref]         8335a7fffd805ba716c822fd40817b34fa0c1d9f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8335a7f Perl 5.44 rebuild