$ git clone -n https://src.fedoraproject.org/rpms/libicns.git /var/lib/mock/f45-build-16324-485/root/chroot_tmpdir/scmroot/libicns
Cloning into '/var/lib/mock/f45-build-16324-485/root/chroot_tmpdir/scmroot/libicns'...
$ git fetch origin b651c651680000ecf8f6397a43f7968eda8e36c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libicns
 * [new ref]         b651c651680000ecf8f6397a43f7968eda8e36c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b651c65 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild