$ git clone -n https://src.fedoraproject.org/rpms/perl-Tree-Simple.git /var/lib/mock/f45-build-27251-622/root/chroot_tmpdir/scmroot/perl-Tree-Simple
Cloning into '/var/lib/mock/f45-build-27251-622/root/chroot_tmpdir/scmroot/perl-Tree-Simple'...
$ git fetch origin 0c754138c54124aefb82fecb1130fbbf56db5a9f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tree-Simple
 * [new ref]         0c754138c54124aefb82fecb1130fbbf56db5a9f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c75413 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild