$ git clone -n https://src.fedoraproject.org/rpms/perl-EV-Glib.git /var/lib/mock/f45-build-23285-596/root/chroot_tmpdir/scmroot/perl-EV-Glib
Cloning into '/var/lib/mock/f45-build-23285-596/root/chroot_tmpdir/scmroot/perl-EV-Glib'...
$ git fetch origin 4163977245b7ef9e882cdf719f98152789d69cd4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-EV-Glib
 * [new ref]         4163977245b7ef9e882cdf719f98152789d69cd4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4163977 Perl 5.44 rebuild