$ git clone -n https://src.fedoraproject.org/rpms/qrencode.git /var/lib/mock/f45-build-34011-676/root/chroot_tmpdir/scmroot/qrencode
Cloning into '/var/lib/mock/f45-build-34011-676/root/chroot_tmpdir/scmroot/qrencode'...
$ git fetch origin 116ffe861f36503de4fbe6764f5673bd3f2a5b0a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qrencode
 * [new ref]         116ffe861f36503de4fbe6764f5673bd3f2a5b0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 116ffe8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild