$ git clone -n https://src.fedoraproject.org/rpms/perl-Wx-GLCanvas.git /var/lib/mock/f45-build-39956-765/root/chroot_tmpdir/scmroot/perl-Wx-GLCanvas
Cloning into '/var/lib/mock/f45-build-39956-765/root/chroot_tmpdir/scmroot/perl-Wx-GLCanvas'...
$ git fetch origin 97852bc140d1b251632669624675ddfd25638f00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Wx-GLCanvas
 * [new ref]         97852bc140d1b251632669624675ddfd25638f00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 97852bc Perl 5.44 rebuild